Genesis 6 is not merely a historical record of great sin and God’s great wrath. It reveals the sinfulness of our own sin today which deserves the same. According to one post-flood Psalmist: “The Lord looks down from heaven on the children of man, to see if there are any who understand, who seek after God. They have all turned aside; together they have become corrupt; there is none who does good, not even one” (Ps. 14:2–3). If you were to ask the average person why God should let him into heaven, he would probably tell you he should live forever because on earth he tried his best to live a good life. Most people sincerely believe their good deeds will get them into heaven—that their bad deeds are not that bad, at least not as bad as whomever they compare themselves to. Genesis 6 helps us to see the world, and our hearts, from God’s perspective. In short, the sins of men are great, but not as great as the sin in our hearts; but this pales in comparison to the greater grace of God.