Mishneh Torah, Foundations of the Torah 1

Sugya Map

• Issue: The foundational principles (yesodot) of Jewish faith: God's existence (metziut Hashem), His absolute unity (yichud Hashem), and His complete incorporeality (she'eino guf). These are presented as the intellectual bedrock (yesod ha'yesodot v'amud ha'chochmot) upon which all wisdom and mitzvot are predicated.
• Nafka Mina(s):
  • Obligation to Know: The knowledge of these principles is a positive mitzvah (Exodus 20:2, Deuteronomy 6:4).
  • Prohibition of Idolatry: Transgressing these principles, particularly by believing in other gods or corporeality, constitutes avodah zarah and denies a fundamental principle (kofer b'ikkar) (Exodus 20:3).
  • Interpretation of Scripture: Provides a hermeneutical key for understanding anthropomorphic language in Tanakh ("The Torah speaks in the language of man" – dibra Torah bilshon bnei adam).
  • Philosophical Basis: Establishes a rational framework for understanding divine attributes and the relationship between Creator and creation.
• Primary Sources:
  • Mishneh Torah, Hilchot Yesodei HaTorah 1:1-12.
  • Shemot 20:2-3; 31:18; 9:3; 24:10; 33:18, 23.
  • Devarim 4:15, 35, 39; 6:4; 28:63; 32:21, 41.
  • Bamidbar 11:1.
  • Bereishit 38:7.
  • Yeshayahu 40:25; 63:1.
  • Yirmiyahu 10:10; 7:19.
  • Malachi 3:6.
  • Tehillim 2:4.
  • Iyov 11:7.
  • Daniel 7:9.

Text Snapshot

The Rambam opens his magnum opus with a declaration of profound philosophical and theological import:

"יסוד היסודות ועמוד החכמות לידע שיש שם מצוי ראשון, והוא ממציא כל נמצא. כל הנמצאים משמים וארץ ומה שביניהם לא נמצאו אלא מאמתת המצאו. ואם יעלה על דעת שאין שם מצוי זה, אין דבר אחר יכול להמצא. ואם יעלה על הדעת שאין כל הנמצאים מלבדו, הוא לבדו נמצא ולא יבטל במציאותם, לפי שכל הנמצאים צריכים לו והוא ברוך הוא אינו צריך להם ולא לאחד מהם." (Mishneh Torah, Foundations of the Torah 1:1)

• Dikduk/Leshon Nuance:
  • "יסוד היסודות ועמוד החכמות" (The foundation of all foundations and the pillar of wisdom): This emphatic double superlative signals the absolute primacy of this knowledge. It's not merely a foundation, but the bedrock.
  • "לידע שיש שם מצוי ראשון" (To know that there is a Primary Being): The phrase "יש שם" (there is) is highlighted by Steinsaltz as being "על דרך הלשון הערבית" (in the manner of Arabic expression), meaning "exists" or "is present in reality." The "מצוי ראשון" (Primary Being) implies both temporal and causal precedence, as Steinsaltz notes, "שמציאותו קודמת לכל המציאות כולה. קדימות זו היא גם קדימות בזמן, וגם קדימות סיבתית" (Steinsaltz, Mishneh Torah, Foundations of the Torah 1:1:2).
  • "מחוייב המציאות" (Necessarily Existent): While not explicitly in the Rambam's text here, the Peirush on Mishneh Torah introduces this critical philosophical term, explaining "מצוי פירוש מצוי מחוייב המציאות" (Peirush on Mishneh Torah, Foundations of the Torah 1:1:2). This Aristotelian concept is key to understanding the Rambam's argument for God's independent existence.
  • "התורה דברה בלשון בני אדם" (The Torah speaks in the language of man): This pivotal hermeneutic principle (Mishneh Torah, Foundations of the Torah 1:9) is the Rambam's master key for resolving the tension between anthropomorphic biblical descriptions and God's absolute incorporeality.

Readings

1. Peirush on Mishneh Torah (Commentary on MT)

The anonymous Peirush on Mishneh Torah (often attributed to the Rashba or one of his students) offers a profound philosophical scaffolding for the Rambam's opening halachot. Its chiddush lies in its systematic articulation of the rational proofs (mofetim) for God's existence, unity, and incorporeality, drawing heavily from Aristotelian metaphysics, while clearly delineating the boundaries of philosophical inquiry vis-à-vis kabbalah (tradition).

The Peirush immediately clarifies the term "מצוי" (existent) in Rambam's opening: "פירוש מצוי מחוייב המציאות" (Peirush on Mishneh Torah, Foundations of the Torah 1:1:2). This M'chuyav HaMetziut – Necessarily Existent Being – is a cornerstone of medieval Jewish philosophy. It contrasts with an Efshari HaMetziut (Contingently Existent Being), which requires an external cause for its existence. The Peirush explains that we cannot grasp God's mahut (essence) because He has no gvul (limit or definition), which in philosophical terms means He has no sug (genus) or hevdal (differentia) from which to derive a definition. Thus, "מציאותו היא מהותו ואינה תוספת על מהותו" (His existence is His essence and not an addition to His essence) (Peirush on Mishneh Torah, Foundations of the Torah 1:1:2).

The Peirush then meticulously lays out proofs for the first three ikarim (principles) – existence, unity, and incorporeality – often presenting multiple mofetim. For existence, it employs the argument from motion (t'nuah) and the argument from contingency. Regarding motion, it states that the continuous revolution of the celestial sphere (galgal) implies a maniah (mover). This mover cannot be corporeal, for a body that moves must itself be moved, leading to an infinite regress unless there is an unmoved mover that is "לא גוף ולא כח בגוף" (not a body nor a force within a body) (Peirush on Mishneh Torah, Foundations of the Torah 1:1:3). Similarly, the argument from contingency posits that since contingent beings exist, there must be a necessarily existent cause.

For unity, the Peirush reasons that if there were two necessarily existent beings, they would share a common aspect and possess distinguishing features, making each a composite. However, "מחוייב המציאות הוא פשוט פישוט אמיתי לא מורכב" (the Necessarily Existent is truly simple, not composite) (Peirush on Mishneh Torah, Foundations of the Torah 1:1:3). Hence, there can only be one. Incorporeality is derived from unity: a body is inherently composite (matter and form) and shares aspects with other bodies (gufaniut), which contradicts the absolute simplicity and uniqueness of the Necessarily Existent.

Crucially, the Peirush notes a fundamental distinction: while these three ikarim (existence, unity, incorporeality) have "ראיות ברורות" (clear proofs) from the philosophers, the fourth ikkar – chiddush ha'olam (creation ex nihilo) – "לא נמצאו עליו מופתים לפיכך ראוי שנאמין בו מדרך הקבלה" (no proofs have been found for it, therefore it is proper that we believe in it through tradition) (Peirush on Mishneh Torah, Foundations of the Torah 1:1:3). This highlights the Rambam's (and the Peirush's) commitment to rational inquiry while acknowledging the limits of human reason, reserving a place for revealed truth where philosophical proofs are absent. It further strengthens emunah even for those who already believe by tradition: "כשנשמע מופת על אחד מאלו העיקרים יסמך הלב בו ותתחזק ההאמנה" (When we hear a proof for one of these principles, the heart will rely on it and faith will be strengthened) (Peirush on Mishneh Torah, Foundations of the Torah 1:1:3).

2. Seder Mishnah

The Seder Mishnah by R. Yechezkel Katzenellenbogen offers a unique, almost mystical, interpretation of the Rambam's opening words, going beyond mere philosophical analysis to uncover a deeper, implicit message. His chiddush is twofold:

1. The Hidden Name: He points out that the initial letters (rashei teivot) of the first four words of the Mishneh Torah – "יסוד היסודות ועמוד החכמות" – spell out the Tetragrammaton, Y-H-V-H. He references the earlier Peirush on Mishneh Torah which noted this possibility ("ואפשר שהגאון ז"ל כונתו היתה לזכור השם המפורש ברמז בתחלת חבור זה" (Seder Mishnah, Foundations of the Torah 1:1:1, citing the Peirush)). The Seder Mishnah then probes why the Rambam would do this in a halachic work.
2. Purpose of Torah and Oral Law: He posits that this hidden name serves to emphasize that the ultimate purpose (takhlit) of all mitzvot, chukim, mishpatim, and de'ot contained within the Mishneh Torah is not for reward in this world or the next (lo al menat lekabel pras), but solely "לבלתי להשם לבדו לעשות רצון המצוה ב"ה" (to God alone, to do the will of the Commander, blessed be He), and "להתקרב בקיום המעשים... אל הש"י" (to draw close through performing the actions... to God) (Seder Mishnah, Foundations of the Torah 1:1:1). This dveikut (cleaving to God) is the "תכלית כל התכלית" (purpose of all purposes). The opening Shem Havaya thus signifies that the entire Mishneh Torah is a path to God Himself.

Furthermore, the Seder Mishnah connects this Shem Havaya to the nature of Torah Sheba'al Peh (Oral Law), which is the primary subject of the Mishneh Torah. He notes that the Written Torah opens with Elokim (Bereishit 1:1), which he associates with midat ha'din (attribute of judgment) and chochmat Shlomo (wisdom of Solomon, worldly wisdom). In contrast, Torah Sheba'al Peh, often doubted or denied by outsiders and heretics, requires a stronger affirmation of its divine origin. Therefore, the Rambam, by embedding Y-H-V-H (associated with midat ha'rachamim – attribute of mercy, and the essence of God's name) at its outset, declares that Torah Sheba'al Peh is equally divine, "כי גם אלה השם דיבר בקדשו" (for these also God spoke in His holiness) (Seder Mishnah, Foundations of the Torah 1:1:1). This subtle opening, therefore, serves as a powerful theological statement about the veracity and ultimate goal of the entire Rabbinic tradition.

Friction

The Kushya: Knowing the Unknowable

The Rambam, with his characteristic rigor, states unequivocally that God "אין לו דמות ותמונה כלל" (has no image or form at all) (Mishneh Torah, Foundations of the Torah 1:9). He further asserts that "האמת של קונספציה זו אינה ניתנת לתפיסה או להבנה על ידי מחשבה אנושית" (the truth of this concept cannot be grasped or comprehended by human thought) (Mishneh Torah, Foundations of the Torah 1:10), citing Iyov 11:7: "הַחֵקֶר אֱלוֹהַּ תִּמְצָא אִם עַד תַּכְלִית שַׁדַּי תִּמְצָא" (Can you find the comprehension of God? Can you find the ultimate bounds of the Almighty?). If God's essence is utterly transcendent and incomprehensible to human intellect, how can the Rambam simultaneously establish "יסוד היסודות ועמוד החכמות לידע שיש שם מצוי ראשון" (Mishneh Torah, Foundations of the Torah 1:1) and declare that "הידיעה בקונספציה זו היא מצוות עשה" (The knowledge of this concept is a positive commandment) (Mishneh Torah, Foundations of the Torah 1:6, 1:7, 1:10)? What kind of "knowledge" is commanded if true comprehension is impossible?

This tension is exacerbated by the Rambam's explanation of Moses's request, "הַרְאֵנִי נָא אֶת כְּבֹדֶךָ" (Please show me Your glory) (Shemot 33:18). Moses, the greatest of prophets, sought to "לידע אמתת מציאותו יתברך... כדי שתהא מציאותו מובדלת במחשבתו משאר הנמצאים" (to know the truth of His existence... so that His existence would be distinguished in his mind from other entities) (Mishneh Torah, Foundations of the Torah 1:10). Yet, God replied that "לא בכח אדם חי... להשיג ענין זה על בוריו" (it is not within the potential of a living man... to comprehend this matter in its entirety) (Mishneh Torah, Foundations of the Torah 1:10). This seems to confirm the inherent unknowability. The kushya is acute: a mitzvah to know, yet a divine declaration of unknowability. Is the Rambam commanding the impossible, or is his definition of "knowledge" highly nuanced?

The Terutz: Knowledge through Negation and Effects

The Rambam resolves this apparent contradiction by drawing a crucial distinction between knowing God's essence (mahut) and knowing His existence and attributes through His actions and effects. The commanded "knowledge" is not a direct apprehension of God's Pnei (face/essence), but rather an intellectual affirmation of His reality, unity, and incorporeality, and an understanding of His wisdom as manifested in the created order and in the Torah. This is the "יראת ה'" (fear of God) and "אהבת ה'" (love of God) that arise from contemplating His greatness and the wonders of His creation (Mishneh Torah, Foundations of the Torah 2:2).

Moses's request to see God's "glory" and God's response – "וְרָאִיתָ אֶת אֲחֹרָי וּפָנַי לֹא יֵרָאוּ" (You shall see My back, but My face shall not be seen) (Shemot 33:23) – is the paradigmatic illustration of this distinction. The Rambam explains that "פניו" (His face) represents the truth of His essence, which is utterly beyond human grasp. "אחוריו" (His back) refers to the knowledge of God that can be attained through His created works and the continuous operation of the universe: "האחורים הם דברים שישיג האדם מהבורא יתברך אחר המצאו, כלומר אחר שישיג וידע מציאות הנמצאים כולם" (The "back" refers to things a person can grasp about the Creator, blessed be He, after His existence, meaning after he grasps and knows the existence of all beings) (Moreh Nevuchim I:37). The knowledge commanded, therefore, is not a full comprehension of God as He is, but rather an understanding of God that enables us to distinguish Him from all other beings, recognizing His uniqueness as the M'chuyav HaMetziut and the ultimate cause.

The Peirush on Mishneh Torah supports this by stating: "דבר שאינו גוף ולא כח בגוף לא נוכל להשיגו אלא ממעשיו ופעולותיו" (A thing that is not a body nor a force within a body, we cannot grasp it except through its actions and activities) (Peirush on Mishneh Torah, Foundations of the Torah 1:1:3). The continuous revolution of the sphere, mentioned by the Rambam as evidence of God's "infinite and unbounded power" (Mishneh Torah, Foundations of the Torah 1:5), is one such "action" through which we infer His existence and omnipotence. The knowledge of God's incorporeality and unity is primarily achieved through negative attributes – understanding what God is not (e.g., not a body, not composite, not limited). This intellectual process, while not revealing His essence, allows for a profound, albeit indirect, apprehension of His unique reality, fulfilling the mitzvah to "know" Him.

Intertext

1. Moreh Nevuchim I:50-59 (Guide for the Perplexed)

The Rambam's Moreh Nevuchim, particularly the chapters dedicated to divine attributes, serves as a profound philosophical commentary and expansion on the terse halachot in Yesodei HaTorah. The Moreh systematically elaborates on the concept of God's incorporeality and the limitations of human language when describing the Divine. In Moreh I:50-59, the Rambam rigorously argues that all positive attributes ascribed to God in Scripture (e.g., wise, strong, merciful) must be understood as attributes of action (middot ha'pe'ullah) or negative attributes. For instance, when we say God is "wise," we do not mean He possesses wisdom as humans do, for that would imply a composite being (an essence plus wisdom). Rather, we mean He is not ignorant, or that His actions manifest wisdom.

This approach directly correlates with the Mishneh Torah's assertion that "התורה דברה בלשון בני אדם" (Mishneh Torah, Foundations of the Torah 1:9). The Moreh provides the philosophical toolkit to deconstruct anthropomorphic language, ensuring that the reader never falls into the trap of attributing corporeality or human-like emotions to God. It deepens the Mishneh Torah's brief statements, showing how one is to understand "יד ה'" (God's hand) or "עיני ה'" (God's eyes) as purely metaphorical, reflecting God's actions or knowledge, rather than physical organs (Moreh Nevuchim I:46). The Moreh makes it clear that the ultimate knowledge of God is through understanding what He is not, thereby affirming His absolute uniqueness and simplicity, which is precisely the intellectual goal set forth in Yesodei HaTorah.

2. Sefer HaIkkarim by R. Yosef Albo (Book of Principles)

R. Yosef Albo's Sefer HaIkkarim (15th century) is a critical philosophical work that directly engages with the Rambam's Thirteen Principles of Faith (found in his commentary on Mishnah Sanhedrin 10:1, and implicitly in Yesodei HaTorah). Albo agrees with the Rambam on the fundamental importance of God's existence, unity, and incorporeality, seeing them as the absolute roots (ikarim) of all faith. However, his work provides a different methodological framework for identifying and categorizing ikarim, offering a valuable comparative perspective.

While the Mishneh Torah implicitly presents these as halachic obligations of knowledge, Albo explicitly defines them as ikarim (principles) that, if denied, constitute heresy and invalidate one's Jewish identity. For example, Albo's first three ikarim parallel the Rambam's: God's existence, His unity, and His incorporeality (Sefer HaIkkarim I:17-23). However, Albo introduces the concept of shorashim (roots) and anafim (branches) within the ikarim structure, suggesting that some principles are more fundamental than others. The Peirush on Mishneh Torah's distinction between mofetim for the first three ikarim and kabbalah for chiddush ha'olam resonates with Albo's nuanced approach to the hierarchy of beliefs. Albo, for instance, debates whether chiddush ha'olam is an ikkar in the same sense as God's existence, a point where the Peirush explicitly states it is based on kabbalah rather than mofet. This comparative text highlights the ongoing discussion in Jewish thought regarding the precise nature and number of fundamental beliefs, all rooted in the Rambam's foundational pronouncements.

Psak/Practice

The halachot in Yesodei HaTorah 1 are not merely theoretical; they form the bedrock of all Jewish halacha and religious practice. The Rambam begins his entire code of law by establishing the obligation to know God's existence, unity, and incorporeality. This "knowledge" is a mitzvah d'oraita (Torah commandment), as stated: "הידיעה בקונספציה זו היא מצוות עשה, שנאמר 'אנוכי ה' אלקיך'" (The knowledge of this concept is a positive commandment, as [implied by Exodus 20:2]: "I am God, your Lord...") and "הידיעה בקונספציה זו היא מצוות עשה, שנאמר 'שמע ישראל ה' אלקינו ה' אחד'" (The knowledge of this concept fulfills a positive commandment, as [implied by Deuteronomy 6:4]: "[Hear, Israel,] God is our Lord, God is one.") (Mishneh Torah, Foundations of the Torah 1:6, 1:7).

The implication is profound: without this foundational knowledge, the entire edifice of mitzvot lacks meaning. How can one fulfill mitzvot if one does not know Who commanded them, or if one believes in multiple gods or a corporeal deity? The Rambam's uncompromising stance on incorporeality directly leads to the absolute prohibition of avodah zarah (idolatry), which is not merely worshiping another entity, but implicitly denying God's uniqueness or reducing Him to a physical form (Mishneh Torah, Foundations of the Torah 1:7).

From a meta-psak heuristic, the Rambam's approach here underscores the primacy of intellectual da'at (knowledge/intellectual understanding) in emunah. While emunah pshuta (simple faith) is valid, the Rambam presents a path for the intellectually sophisticated to achieve a deeper, rigorously reasoned understanding of God. This rationalist framework became a dominant paradigm, influencing how subsequent poskim and thinkers approached theological questions within halacha. Even where mofetim are not applicable (e.g., chiddush ha'olam), the obligation to accept kabbalah is presented as a rational necessity, as the alternative (eternal universe) has no definitive proof and contradicts revelation. Thus, the Rambam's Yesodei HaTorah lays down the non-negotiable theological boundaries for Jewish practice and thought, shaping the very definition of a faithful Jew.

Takeaway

The Rambam's opening in Yesodei HaTorah is a monumental declaration: intellectual comprehension of God's singular, incorporeal, necessary existence is not merely philosophy, but the foundational positive commandment and the sine qua non for all Torah and mitzvot. It establishes a rigorous rationalist framework for emunah, while acknowledging the ultimate unknowability of God's essence, demanding instead a knowledge born of contemplation of His actions and negative attributes.