And God blessed Noah and his sons and said unto them, Be fruitful, and multiply, and replenish the earth. This is a repetition and a confirmation of the blessing of creation, Genesis 1:28. As founders of the new human race, Noah and his sons received the assurance of God's blessing for the propagation of their kind. Note that the blessing of the Lord is incidentally a command; it is His will that the human race should be propagated, that man and woman, in holy wedlock, should be fruitful and multiply. The modern criminal limiting of offspring is a blasphemous perversion of God's order of creation.
Related Commentaries of Genesis 9:1
Genesis 9:1
1 And God blessed Noah and his sons, and said unto them, Be fruitful, and multiply, and replenish the earth.