Genesis 6:3

6:3 So the Lord said, “My spirit will not remain in humankind indefinitely, since they are mortal. They will remain for 120 more years.”

Genesis 6:5-7

6:5 But the Lord saw that the wickedness of humankind had become great on the earth. Every inclination of the thoughts of their minds was only evil all the time. 6:6 The Lord regretted that he had made humankind on the earth, and he was highly offended. 6:7 So the Lord said, “I will wipe humankind, whom I have created, from the face of the earth – everything from humankind to animals, including creatures that move on the ground and birds of the air, for I regret that I have made them.”