Luke 17:26

When Jesus said the days of the Son of Man would be similar to the days of Noah He meant the days just before the Son of Man’s reign. This is clear from the comparison with the beginning of the Flood. In Noah’s days and toward the end of the Tribulation, just before Jesus returns, people were and will be unresponsive to preached warnings of coming judgment (cf. Matthew 24:37-39; 2 Peter 2:5). In Noah’s day, "The wickedness of man was great on the earth, and every intent of the thoughts of his heart was only evil continually" (Genesis 6:5). "Now the earth was corrupt in the sight of God, and the earth was filled with violence" (Genesis 6:11).