ציטירנדיקער פּירוש אויף בראשית 7:17

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) .