3. He tells him plainly what was the procuring cause of all these judgments; it was the sin of Jerusalem and of the cities of Judah (v. 16): I will pass sentence upon them (so it may be read) or give judgment against them (this sentence, this judgment) because of all their wickedness; it is this that plucks up the flood-gates and lets in this inundation of calamities. They have forsaken God and revolted from their allegiance to him, and have burnt incense to other gods, new gods, strange gods, and all false gods, pretenders, usurpers, the creatures of their own fancy, and they have worshipped the works of their own hands. Jeremiah was young, had looked but little abroad into the world, and perhaps did not know, nor could have believed, what abominable idolatries the children of his people were guilty of; but God tells him, that he might know what to level his reproofs against and what to ground his threatenings upon, and that he might himself be satisfied in the equity of the sentence which in God's name he was to pass upon them.