וַֽיְהִ֧י הַמַּבּ֛וּל אַרְבָּעִ֥ים י֖וֹם עַל־הָאָ֑רֶץ וַיִּרְבּ֣וּ הַמַּ֗יִם וַיִּשְׂאוּ֙ אֶת־הַתֵּבָ֔ה וַתָּ֖רָם מֵעַ֥ל הָאָֽרֶץ׃
홍수가 땅에 사십 일을 있었는지라 물이 많아져 방주가 땅에서 떠 올랐고
Rashi
ויהי הגשם על הארץ AND THE RAIN WAS UPON THE EARTH — But later on (v. 17) it says. “And the Flood was upon the earth”! But the explanation is this: when He poured down the water at first He made it fall in mercy (gently), in order that if the people would repent, it might prove a rain of blessing; but when they did not repent it became a destructive flood (Genesis Rabbah 31:12) .