The foolishness of man perverteth his way: and his heart fretteth against the LORD.
– Proverbs 19:3
The word for perverteth means to twist, or ruin. The sense of the first phrase is that a man given to folly comes to ruin (Proverbs 13:6). The word for fretteth means to boil, or be enraged. A man’s folly is his own undoing and it kindles his anger against God.