Jeremiah 18:1

The sum of what is here taught is, that as the Jews gloried in God’s singular favor, which yet had been conferred on them for a different purpose, even that they might be his sacred heritage, it was necessary to take from them a confidence of this kind; for they at the same time heedlessly despised God and the whole of his law. We indeed know that in God’s covenant there was a mutual stipulation — that the race of Abraham were faithfully to serve God, as God was prepared to perform whatever he had promised; for it was the perpetual law of the covenant,

“Walk before me and be perfect,”

which was once for all imposed on Abraham, and extended to all his posterity. (Genesis 17:1.) As then the Jews thought that God was by an inviolable compact bound to them, while they yet proudly rejected all his prophets, and polluted, and even as far as they could, abolished, his true favorship, it was necessary to deprive them of that foolish boasting by which they deluded themselves. Hence the Prophet was commanded to go down to the potter’s house, that he might relate to the people what he saw there, even that the potter, according to his own will and pleasure, made and re-made vessels.

It seems indeed at the first view a homely mode of speaking; but if we examine ourselves we shall all find, that pride, which is innate in us, cannot be corrected except the Lord draws us as it were by force to see clearly what it is, and except he shews us plainly what we are. The Prophet might have attended to God speaking to him at his own house, but he was commanded to go down to the house of the potter — not indeed for his own sake, for he was willing to be taught — but that he might teach the people, by adding this sign as a confirmation to his doctrine.