We have in this chapter the Lord's assessment of the wickedness of the human race, together with His pronouncement of judgment. The life and testimony of Noah is singled out as an instance of God's saving grace. Noah was a just man (freely justified by the redemption that is in Christ Jesus); perfect in his generations (living godly in Christ Jesus in the midst of a crooked society); walking with God (enjoying blessed fellowship and communion with the Lord); obedient to the Lord (following the Lord's instructions, even when the adverse circumstances make no sense). 

We have in this chapter a catalogue of ten generations, represented by one man per generation, covering a total period of 1,656 years. All ten men were the ancestors of the Messiah. Among them are Jared, the second oldest man in history and father of Enoch; Methuselah, the oldest man in history and son of Enoch; Enoch, the man who lived the shortest time in his generations and did not see death, for God took him immediately to heaven. Although Noah is introduced at the end of the chapter, Enoch is the man who is given prominence, he being a regenerate sinner, walking with the Lord and preaching the gospel of Christ.