John Calvin's Bible Commentary
Jeremiah 44:20
The Prophet refutes the impious objections by which the Jews had attempted to subvert and to render contemptible his doctrine, he then turns against them all that they had falsely boasted. They had at the beginning said, “Our kings, our princes, and our fathers, had before used these rites; and they have been delivered to us, as it were, by their hands.” To this Jeremiah answers, “This is certainly true, and for this reason it was that God became so severe a judge of their impiety, when he took away your fathers from the world, when he wholly destroyed the kingdom itself, when he demolished the city, and when at length he afflicted you with all kinds of evils: for except your kings, and your fathers, and your princes, had been impious towards God, he would have never treated them with so much severity; for he has promised to be a Father to the children of Abraham. God, then, must have been grievously offended with you, and your fathers, and your kings, when his wrath thus burned against them.”
There is, then, here a retort; for as we see that the Prophet turns against them what they had adduced against him. This is the sum of what is said.
He says that he spoke to the whole people, both men and women, and he repeats the whole people, because all had subscribed to the impious calumny. Then God says, “For this reason have I destroyed your city and you, even because ye burnt incense to-your idols.” The truth of what they had boasted is allowed, but it is turned to a meaning different from what they thought. For, as their fathers and their kings had imbibed superstitions, they supposed that they were doing right in following them; for, as we have said, hypocrites consider use and custom as sufficient reasons for disregarding the Law. Then, as to the fact itself, the Prophet admits that what they said was quite true, that this had been the cause of all their evils; for had not the kings and the whole people provoked the wrath of God, the temple would not have been demolished, nor the kingdom destroyed; God, in short, would not have alienated himself from his own people whom he had adopted. This is the meaning.