Psalms 50:18-20

These verses contain specific instances of the Israelites’ hypocrisy. They loved what God hated. Furthermore, they did not allow God’s will to govern their speech (cf. James 3:1-12).

"In the present verse [18] there may be an implication, too, of the hypocrisy of enjoying sin at second-hand while keeping out of trouble oneself; and this would be in character with the deviousness portrayed in 19 and 20." [Note: Kidner, p. 188.]