What were the days of Noah teaching us?

The days of Noah serve as a sobering reminder of human depravity and the dire consequences of living in disregard to God. Jesus references these days in Luke 17:26-27 to describe the normalcy of life prior to divine judgment; people were eating, drinking, and marrying, oblivious to the impending flood. This behavior is reflective of mankind's inherent wickedness, as seen in Genesis 6:5, where God observes that 'the thoughts of man's heart are only evil continually.' The narrative warns contemporary society that like in Noah's time, many live without fear or regard for God, emphasizing the necessity for genuine faith and repentance before the day of the Lord comes.