John Calvin's Bible Commentary
Jeremiah 34:14
This passage, as many others, clearly shews the great perverseness of the people. Certainly the Law spoken of here ought to have been well approved by the Jews, for they found that they were by a privilege exempted from the common lot of men, and had been preferred before all nations. As, then, they saw that it was a signal evidence of God’s bounty towards the seed of Abraham, this ought to have allured them to observe the Law, inasmuch as they found in it what was especially suitable to them; but as every one became addicted to his own private advantage, the poor were oppressed, and a temporary servitude was changed into what was perpetual. There is no wonder then that men soon forgot what was right, though they seemed to have hearkened for a short time to God. It has been the common vice of all ages that the laws of God became soon forgotten and disregarded; so the law of freedom, though especially excellent, became, as we see, neglected.
He adds, Nor inclined their ear We have stated elsewhere that this phrase is emphatic, when added to the expression of not hearkening; for it is a proof of deliberate wickedness, when men close up their ears, and listen not to what is right. It is possible for one to neglect what is said, or not to understand it; but when one intentionally closes his ears, it is a proof of hopeless obstinacy. God, then, is wont to express by this mode of speaking, the perverseness and hardness that prevailed in the ancient people, through which they rejected all sound doctrine. And this ought to be carefully noticed; for where the word of God is made clearly known, in vain we excuse ourselves for not following what he commands, for he speaks not obscurely, as he says by Isaiah. (Isaiah 45:19) How comes it, then, that doctrine does not produce fruit in us? even because we wilfully reject it, closing our cars and disregarding God himself when he speaks. Now the reason why God brings a charge against the fathers is, that the comparison might enhance the wickedness of their children, who, after having professed that they had some regard for religion and some feeling of mercy, soon returned to their old ways, according to what follows —