1536 years had passed since God created the world. In the very beginning, man was perfect. But man sinned. Shortly after the fall, the first man was murdered. Sin did not retreat, but it grew in its prominence. Man sought after temporal things rather than God. Marriage was corrupted. Immorality was totally out of control (Genesis 6:1-4). The entire earth was filled with violence (Genesis 6:13).
Many people think that man is morally sound— that although man occasionally stumbles, overall he is relatively good. Genesis 6:5 stands in contradiction to such reasoning:
Then the LORD saw that the wickedness of man was great on the earth, and that every intent of the thoughts of his heart was only evil continually. (Genesis 6:5)Note that it wasn't just anyone who saw that the wickedness of man was great, it was the LORD who saw that the wickedness of man was great. Had it merely been a self-righteous hypocrite who saw the wickedness of man, the opinion would have been of little importance. But when God, the holy God, the perfect God, the God who is without sin. When He sees that the wickedness of man is great on the earth, then the "opinion" is certainly worthy of attention.
God sees everything. There is nothing which escapes his sight. Proverbs 15:3 states:
The eyes of the LORD are in every place,It is the LORD who reigns over the entire earth. It is the LORD who is everywhere present. Simply put, God sees absolutely everything. What God saw when He looked upon the earth was only wickedness; He saw that the wickedness of man was great.
Watching the evil and the good.
All of man's thoughts, desires, and pursuits were totally and completely wicked. Man who was once perfect, the crown of creation. Man who was made in the image of God had become filth, covered and engulfed by sin. Man was enslaved to rebellion— the thoughts of his heart were only evil...
But man's thoughts were not just evil, they were evil continually. The wickedness was unceasing, not just an occasional mistake. The men of the pre-flood world were totally and completely in bondage to sin. The same can be said of all men in this day who refuse to come to Christ— who refuse repentance and salvation. All those who choose to rebel against God live in continual sin, for the mind set on the flesh is hostile toward God; for it does not subject itself to the law of God, for it is not even able to do so, and those who are in the flesh cannot please God. (Romans 8:7-8)
How Bad Is Sin? (Part 1) - The Christian Worldview
All Men Are Guilty - The Christian Worldview
Righteous Men of the Pre-Flood World - Genesis 4:26
Who Are the Sons of God? (Part 1) - Genesis 6:1-4