They feed on the sin of my people, And set their heart on their iniquity.
I come now to the meaning of the whole. Though the Prophet here accuses the priests, yet he involves, no doubt, the whole people, and deservedly, in the same guilt: for how was it that the priests expected gain from sacrifices? Even because the doctrine of the law was subverted. God had instituted sacrifices for this end, that whosoever sinned, being reminded of his guilt, might mourn for his sin, and further, that by witnessing that sad spectacle, his conscience might be more wounded: when he saw the innocent animal slain at the altar, he ought to have dreaded God’s judgment. Besides, God also intended to exercise the faith of all, in order that they might flee to the expiation which was to be made by the promised Mediator. And at the same time, the penalty which God then laid on sinners, ought to have been as a bridle to restrain them. In a word, the sacrifices had, in every way, this as their object, — to keep the people from being so ready or so prone to sin. But what did the ungodly do? They even mocked God, and thought that they had fully done their duty, when they offered an ox or a lamb; and afterwards they freely indulged themselves in their sins. 