Leviticus 13

Sugya Map

• Issue: The anomalous usage of "כי" instead of "אשר" in "אדם כי יהיה" at the outset of parshas tzara'at, coupled with the unusual dual address "אל משה ואל אהרן."
• Nafka Mina: The point at which tzara'at becomes tameh – whether it's an inherent state or dependent on a divine declaration or specific context.
• Primary Sources: Vayikra 13:1-2, Nega'im 3:1, Devarim 21:5.

Text Snapshot

Vayikra 13:1: "וַיְדַבֵּר יְהֹוָה אֶל מֹשֶׁה וְאֶל אַהֲרֹן לֵאמֹר" Vayikra 13:2: "אָדָם כִּי יִהְיֶה בְּעוֹר בְּשָׂרוֹ שְׂאֵת אוֹ סַפַּחַת אוֹ בַהֶרֶת וְהָיָה בְעוֹר בְּשָׂרוֹ לְנֶגַע וְהוּבָא אֶל אַהֲרֹן הַכֹּהֵן אוֹ אֶל אַחַד מִבָּנָיו הַכֹּהֲנִים"

• Dikduk/Leshon Nuance: The phrase "אדם כי יהיה" is striking. Grammatically, for an existing condition, one might expect "אדם אשר יהיה." The dual address "אל משה ואל אהרן" (instead of just to Moshe, or "דבר אל בני ישראל") highlights the priestly role.

Readings

• Ramban (Leviticus 13:1): Explains the address "אל משה ואל אהרן" because the priest holds the authority for declaring tum'ah and taharah for nega'im, as stated in Devarim 21:5, "ועל פיהם יהיה כל ריב וכל נגע" (Devarim 21:5). He further notes that tzara'at carries both physical and spiritual/moral significance.
• Malbim (Ayelet HaShachar 104:1-2, Tazria 36:1): Distinguishes "כי" from "אשר." "אשר" indicates an inherent, pre-existing condition, while "כי" denotes an action or condition that becomes effective from that point forward. Thus, "כי יהיה" teaches that tzara'at only renders one tameh from the dibbur (giving of the Torah) onwards. A nega existing on a non-Jew who converts, or a minor who matures, is tahor because it existed before the dibbur or the individual's eligibility for tum'ah.

Friction

• Kushya: If the Malbim is correct, why do we find "כי יהיה" in other contexts, like zav (Vayikra 15:2), but not apply this chiddush universally to all tum'ot? What makes tzara'at (and zav) unique in this regard?
• Terutz: The Malbim himself notes this parallel in zav. The unique nature of tzara'at and zav is that their tum'ah is primarily a gezeiras hakasuv tied to the divine command and the priest's declaration, rather than a purely naturalistic impurity. Hence, the Torah emphasizes their halachic efficacy commencing midibbur v'eilach, unlike other tum'ot which might be more inherently present.

Intertext

• Devarim 21:5: "וְעַל פִּיהֶם יִהְיֶה כָּל רִיב וְכָל נָגַע" – Cited by Ramban (Leviticus 13:1) to underscore the priest's definitive role in nega'im.
• Vayikra 15:2: "דַּבֵּר אֶל בְּנֵי יִשְׂרָאֵל וְאָמַרְתָּ אֲלֵהֶם אִישׁ אִישׁ כִּי יִהְיֶה זָב מִבְּשָׂרוֹ זוֹבוֹ טָמֵא הוּא" – The parallel "כי יהיה" in parshas zav reinforces the Malbim's interpretation of "כי" as signifying tum'ah only midibbur v'eilach.

Psak/Practice

The Malbim's interpretation profoundly shapes hilchos tum'as tzara'at. The practical halacha, as derived from this nuance, is that a nega that developed under circumstances where tum'ah did not apply (e.g., on a nochri before conversion, or a katan before gadlus) is considered tahor even if the individual later becomes subject to tum'ah laws. This is a foundational yesod in understanding gezeiras hakasuv in tum'ah.

Takeaway

The specific choice of "כי יהיה" in parshas tzara'at underscores that its tum'ah is not an inherent physical state but a divinely decreed status, effective only from the moment of the dibbur onwards.