50:16-17 The Lord also charged the wicked in Israel with professing allegiance to Him while disobeying Him.
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."112
50:21 The people evidently concluded that because God did not judge them for their sinful ways their sins did not matter to Him. They did not matter to them. Such was not the case. Judgment was coming. They would have to account for their actions.