Targum Pseudo-Jonathan on Genesis 9:11 delivers the promise every frightened heart has clung to since Noah stepped off the ark. I will establish my covenant with you, and will not again cause all flesh to perish by the waters of a flood; and there shall not again be a flood to destroy the earth.
Notice the double promise. Not again by a flood that takes all flesh. Not again a flood to destroy the earth. The Holy One says it twice, and the repetition is comfort itself. This is brit olam, an eternal covenant, and Torah swears it at the foot of a drying world.
Jewish tradition calls this the first universal covenant in history. Not with Abraham, not with Moses, not with Israel alone — with every human being alive and every human being yet to be born. When we say the blessing upon seeing a rainbow, zocher ha-brit, the One who remembers the covenant, we are standing inside this promise.
The takeaway the Maggid draws: God's no is as sacred as God's yes. Heaven has limits it will not cross a second time. The earth will see many troubles, but the specific terror of universal drowning has been retired by divine oath. That is not a small thing. That is the first promise any of us can ever truly lean on.