New Defender's Study Bible Notes
6:12 all flesh. Since “all flesh,” as destroyed in the Flood, included animals (Genesis 7:21), some have suggested that animals also had “corrupted their ways” and were contributing to the worldwide violence. This is doubtful, since animals do not make moral judgments. However, as a part of man’s dominion, they shared in his curse and now in the judgment of the Flood. This verse may possibly imply the development of carnivorous appetites and increasing hostility to man by the animals.