צפניה ב:ג קבלה: זוהר

Come and behold: It is written, "Seek righteousness, seek humility; it may be you shall be hidden on the day of Hashem's anger" (Tzefanyah 2:3). Noah did seek righteousness. He entered the ark and was hidden there on the day of Hashem's anger. And that is why Judgment could neither be applied to nor hurt him.