כִּי־מֵ֥י נֹ֙חַ֙ זֹ֣את לִ֔י אֲשֶׁ֣ר נִשְׁבַּ֗עְתִּי מֵעֲבֹ֥ר מֵי־נֹ֛חַ ע֖וֹד עַל־הָאָ֑רֶץ כֵּ֥ן נִשְׁבַּ֛עְתִּי מִקְּצֹ֥ף עָלַ֖יִךְ וּמִגְּעָר־בָּֽךְ׃
For this is as the waters of Noah unto Me; for as I have sworn that the waters of Noah should no more go over the earth, so have I sworn that I would not be wroth with thee, nor rebuke thee.
Rashi on Isaiah
For this is to Me [as] the waters of Noah [i.e.,] it is an oath in My hand, and He proceeds to explain His words, “as I swore that the waters of Noah shall never again pass over the earth, etc.”
Ibn Ezra on Isaiah
The waters of Noah. The flood that was in the days of Noah.
Ibn Ezra on Isaiah
This, namely, the punishment, which I decreed, and the comfort which I promised.19The punishment is compared with the flood, the comfort with the promise which was then given by the Lord, that the flood should never be brought again.