John Calvin's Bible Commentary
Jeremiah 19:14
Jeremiah had been led to the very place, when he foretold the punishment, which was nigh at hand, on account of the superstitions of Tophet or of the valley of Hinnom. That his doctrine might be more efficacious, God intended that he should preach before the very altar and in the very valley, then well known for ungodly and false modes of worship. He says now that he went to the Temple and delivered there the same message. We hence learn how great must have been the stupidity and indifference of the people, for the repetition of the prophecy was not unnecessary. For as God knew that the Jews were extremely tardy and slow, he caused them to be warned twice by his servant, and in two different places.
Jeremiah, it is said, returned from Tophet, where God had sent him to prophesy; which last words were added, that we may not suppose that he without reason preached in the valley of Hinnom. God then commanded Jeremiah to denounce there, as it were in the very place, on the Jews their own destruction. And he stood, it is added, in the court of Jehovah’s house. As it was not lawful for the people to enter into the Temple, they usually assembled in the court, which was a part of the Temple. Then Jeremiah stood there; for he had to speak, not to a few, or in a corner, but to the whole people, and to make them witnesses of his prophecy. But we read here nothing new; for, as it has been stated, he was bidden to declare twice the same thing — the approaching calamity; and he was so bidden, because the Jews were so hardened, that they could not easily be moved. That he connects other cities with Jerusalem is not to be wondered at; he thereby intimates, that the whole land was guilty before God, and that therefore desolation was near at hand, as to all the towns and cities; as though he had said, “God will not spare Jerusalem, though it has been hitherto his sanctuary; but as lesser cities are not innocent, they shall also feel the hand of God together with Jerusalem.”