John Chrysostom
The Lord instructed Noah, his family, and all the animals to leave the ark, so that He would not experience great sorrow or be troubled by thoughts of living alone in the vast wilderness. God commanded them to "go out" from the ark and to "bring all with you," and He added for them to be fruitful and multiply on the earth. Observe how this righteous man receives the same blessing that Adam was given before the fall. Just as Adam, upon his creation, was told, "Be fruitful and multiply, and fill the earth, and subdue it" (Gen. 1:28), so Noah is commanded, "Be fruitful and multiply on the earth." This signifies that while Adam was the origin and foundation of those who lived before the flood, Noah serves as the leaven, the beginning and foundation of all who come after. Thus, from this point, human society is established, and the beauty of creation emerges - the earth becomes fruitful, and all other creatures are made to serve humanity.