John Wesley on Genesis 6:11

The earth also was corrupt before God - That is, in the matters of God's worship; either they had other gods before him, or worshipped him by images: or, they were corrupt and wicked in despite of God. The earth was also filled with violence, and injustice towards men; there was no order nor regular government, no man was safe in the possession of that which he had the most clear right to, there was nothing but murders, rapes and rapines.