Note the continued difference between God and Lord; God is a more secret, and at the same time universal name—Lord, of positive relationship. There is no question of sevens, or clean beasts with God, but with the Lord. God in speaking to Noah speaks of His own thoughts, and what is before Him; the Lord commands him in certain duties and relationships.
In verse 21 and the like, we have the witness of the way in which the corporate nature of man—the ha-Adam is spoken of, so in chapter 6:1. o protor anthropos.