The Tzaddik as Foundation of the World

אלה תולדות נח.

"These are the generations of Noach."

The Torah opens the account of Noach by pointing to what truly "comes forth" from him — not merely descendants, but the world that is rebuilt through a tzaddik.

אלה פסל את הראשונים דכ' אלה תולדות שו"א כי הלא הי' גלוי וידוע לפניו ית"ש כי יחרב העולם במבול.

The word "these" disqualifies what came before, as Chazal expound on the verse "these are the generations of heaven and earth" — for surely it was revealed and known before Hashem that the world would be destroyed by the Flood.

Why call Noach's line "the generations" when the original creation was washed away? Because Hashem foresaw from the start that the natural world He first made would not endure on its own.

אך כי רצה להודיע אשר צדיק יסוד עולם ושכל העולם תלוי בעבודת האדם כדכתיב אנכי עשיתי ארץ ואדם עלי' בראתי שיהי' אדם השליט.

Rather, Hashem wished to make known that "the tzaddik is the foundation of the world," and that the entire world depends on the avodah of man — as it is written, "I made the earth and created man upon it," so that man should be the one who rules.

The Flood was allowed so that the world would be re-founded upon the deeds of the tzaddik. The whole purpose of creation is that man, through his avodah, should sustain and govern the world.

כדכתיב כל שתה תחת רגליו.

As it is written, "You have placed everything beneath his feet" (Tehillim 8:7).

Hashem subordinated all of creation to man, making him the master through whom the world is upheld.

ולכן הבריאה שהי' בכח הטבע נחרב ונעשה אח"כ התולדות בכח הצדיק.

Therefore the creation that stood by the power of nature was destroyed, and afterward the "generations" came into being through the power of the tzaddik.

A world resting on nature alone could not last. The renewed world rests instead on the spiritual power of the tzaddik — this is the deeper meaning of Noach's "generations."

דאיתא גדולים מעשה צדיקים ממעשה שמים וארץ ע"ש בכתובות:

For Chazal teach that "the deeds of the tzaddikim are greater than the making of heaven and earth" — see there in Kesubos.

The acts of tzaddikim surpass even the creation of heaven and earth, because it is through them that the world is given enduring foundation and purpose.

Summary: The first natural creation was destined to be swept away so that the world could be rebuilt upon a higher foundation — the avodah of the tzaddik. Man, and especially the tzaddik, is the ruler through whom the world is sustained, and his deeds are greater than the original making of heaven and earth.