What iniquity, etc.; rather, what unrighteousness, etc. (comp. Deuteronomy 32:4, "a God of faithfulness, and without unrighteousness," alluding to the "covenant" between Jehovah and Israel). God's condescending grace (his 'anavah, Psalms 18:36).
As if he were under an obligation to Israel (comp. Micah 6:3, etc.; Isaiah 5:3). Vanity; i.e. the idols; literally, a breath (so Jeremiah 10:15; Jeremiah 14:22; Jeremiah 16:19). Are become vain. The whole being of man is affected by the want of solid basis to his religion (comp.
Jeremiah 23:16; Psalms 115:8); and the evident allusion to our passage in Romans 1:21. The clause is verbally repeated in 2 Kings 17:15, with reference to the ten tribes.