It is interesting to see the Biblical view of the history of the human race portrayed here. We see long periods of time we think of as everyday life - punctuated by occasions of God's global intervention. The days of Noe (Noah) and the present days are portions of distinct ages in God's timetable for history, each to be terminated by God. What probably seemed to the men of Noah's time as "business as usual" one day was suddenly changed by the Great Flood. This age is also soon to be brought to a close by an earthshaking intervention, the return of Jesus Christ.
We also learn that conditions leading up to the flood will be found again before the return of Christ. This means that all we have to do is read of life in Noah's day to know when things are ready for the Lord's coming. "The earth also was corrupt before God, and the earth was filled with violence" (Genesis 6:11). Corruption has to do with immorality, perversion, and other forms of rottenness that come from human selfishness and lust. The violence follows naturally with corruption as people abuse others to satisfy their addictions and selfishness. Is that true today? It sounds like a summary of the evening news
This text is an example of one of the great benefits of God's Word - prophecy, knowledge of the future. The second benefit is knowledge of the past and therefore the opportunity to learn from history. "By faith Noah, being warned of God of things not seen as yet, moved with fear, prepared an ark to the saving of his house" (Hebrews 11:7a). Jesus came the first time to provide salvation on the cross and to have the message of salvation preached throughout this entire church age. When He comes back the day of grace and opportunity will be over. He tells us that, "behold, now is the accepted time; behold, now is the day of salvation" (II Corinthians 6:2b).