For I desire mercy, and not sacrifice; And the knowledge of God more than burnt offerings.
What! to compare sacrifices with murders! This seems very strange; but the Prophet directed his discourse to the ungodly, who then abused the whole outward worship prescribed by the law: no wonder then that he thus spake of sacrifices. In the same manner also ought many other passages to be explained, which frequently occur in the Prophets. We now then see that God does not simply reject sacrifices, as far as he has enjoined them, but only condemns the abuse of them. And hence what I have already said ought to be remembered, that the Prophet here sets external rites in opposition to piety and faith, because hypocrites tear asunder things which are, as it were, inseparable: it is an impious divorce, when any one only obtrudes ceremonies on God, while he himself is void of piety. But as this disease commonly prevails among men, the Prophet adds a contrast between this fictitious worship and true religion. It is also worthy of being observed, that he calls faith the knowledge of God. We then see that faith is not some cold and empty imagination, but that it extends much farther; for it is then that we have faith, when the will of God is made known to us, and we embrace it, so that we worship him as our Father. Hence the knowledge of God is required as necessary to faith. The Papists then talk very childishly about implicit faith: when a man understands nothing, and has not even the least acquaintance with God, they yet say that he is endued with implicit faith. This is a romance more than foolish; for where there is no knowledge of God, there is no religion, piety is extinct and faith is destroyed, as it appears evident from this passage. 