For I perceive that thou art in the gall of bitterness, and in the bond of iniquity.
Ver. 23. Thou art in the gall, &c.] The apostle alludeth to Deuteronomy 29:18. Sin is a bitter potion, a deadly poison, which therefore we must quickly cast up again by confession, ere it get to the vitals. Simon Magus is here convinced by the very show of godliness, under which he hoped to have lurked; as the fish sepia is betrayed by the black colour which she casteth out to cover her.