Midrash sa Jeremias 31:35: Midrash Tanchuma, Mekhilta DeRabbi Yishmael, Esther Rabbah & Mekhilta DeRabbi Shimon Ben Yochai

The Torah served as an artisan in all the work of creation, as it is said: Then I was with Him, as a nursling (amon) (Prov. 8:30). However, you do not read the word as amon (“nursling”), but as uman (“artisan”), since it was with the assistance of the Torah that God stretched out the heavens and established the earth, as it is said: If My covenant be not with day and night, if I have not appointed the ordinances of heaven and earth (Jer. 33:25). With it, He bound up the sea lest it should go forth and overflow the world, as it is said: Fear ye not Me? saith the Lord; nor will ye not tremble at My presence who have placed the sand for the bound of the sea (ibid. 5:22). With it, also, He locked up the deep so that it might not inundate the world, as is written: When He set a circle on the face of the deep (Prov. 8:27). Similarly, He fashioned with it the sun and the moon, as is said: The Lord giveth the sun to light the day, the ordinances of the moon and the stars to light the night. Who stirreth up the sea, that the waves thereof roar, the Lord of hosts is His name (Jer. 31:35). Hence, you learn that the world was founded upon the Torah.

R. Shimon b. Yochai says: The sun and the moon testify that I have already split the sea for them, viz. (Jeremiah 31:35) "Thus said the L–rd who gives the sun for light by day, the laws of moon and stars for light by night, who splits the sea and stuns its waves — the L–rd of hosts is His name."

R. Eliezer Hamodai says: "Why do you cry out to Me?" I do not have to be commanded for the children of Israel, (Isaiah 45:11) "For My children and the work of My hands would you command Me?" Are they not "readied" before Me from the six days of creation? (Jeremiah 31:36) "Just as these laws (of nature) will not depart from before Me, says the L–rd, so the children of Israel will not cease from being a nation before me for all time."