Why did God send the flood? Back in Noah’s day, things were pretty bad on earth. Check out Genesis 6. The fallen angels (those who rebelled with Satan against God) decided to go get themselves human wives down on earth. The fallen angels mated with the human women and children were born. It was wickedness and rebellion against God for the fallen angels to come down and have “demigod” children(meaning, half human, half fallen angel) with the human women. They shouldn’t have done that.
These were the giants that were on the earth in those days. (Another word is Nephilim). They were giant, mighty, powerful, men of “renown”. They were famous! Does this sound familiar? How about all the giants from the fairytales? How about the Greek and Roman demigods? How about modern superheroes? These “myths” all come from this little understood part of earth history. These were real beings who once were on the earth.
The earth and it’s inhabitants were pretty wicked. God saw that every intent of the thoughts of the heart were only evil continually (v.5). There was violence, murder, evil and sorcery. By the way, Jesus said that the coming of the Son of Man would be just like the days of Noah. It will be like a repeat of history. (Matt.24:37.) People would not believe that God’s judgment was coming (even though warned), until it was upon them.
So God decided to show His righteousness and judge the world for it’s wickedness by blotting out all mankind on earth. But! Noah found favor in the eyes of the Lord. God gave Noah grace. Noah walked with God. That means he was reverent towards God and loved and honored God. God saved Noah and his family. It is important to understand that God’s character includes His righteousness and justice, as well as His mercy and grace.
“But Noah found grace in the eyes of the LORD.” Gen.6:8.