Albert Barnes Commentary Proverbs 2:12-15

"To deliver thee from the way of evil, From the men that speak perverse things; Who forsake the paths of uprightness, To walk in the ways of darkness; Who rejoice to do evil, And delight in the perverseness of evil; Who are crooked in their ways, And wayward in their paths:" — Proverbs 2:12-15 (ASV)

The evil-doers here include not robbers and murderers only (Proverbs 1:10–16), but all who leave the straight path and the open day for crooked ways, perverse counsels, deeds of darkness. To delight etc. (Proverbs 2:14) is the lowest depth of all.