John Calvin's Bible Commentary
Jeremiah 42:1
I have said that John, and his associates, and the whole people acted much more culpably by coming to the Prophet, than if they had not done so, and had gone directly to Egypt: for they either came dissemblingly, and thus designedly spoke what was false, or they were extremely stupid, and hypocrisy had wholly deprived them of their understanding. They came to the Prophet to ask counsel; nay, that he might be to them God’s interpreter, and that thus they might know what to do; and they promised to obey, as we shall hereafter see. However this may have been, they sought an oracle in which it was their duty to acquiesce, except they resolved openly to shake off the yoke and to show themselves to be gross and profane despisers of God. They came to the Prophet, when yet it was their fixed purpose, as we shall see, to go to Egypt.
He who asks counsel, ought first to see that he bring no prejudice, but be free and honest: but it is, however, a fault too common, that men deliberate and ask counsel, when they have already settled what to do; nay, nothing is more common than this; for those who consult do not, for the most part, wish to learn what is right, but that others should fall in with their own inclinations. He who has resolved on this or that point, pretends that he is in doubt, and held in suspense; he asks what ought to be done: if the answer be according to his wishes, he embraces what is said; but if he who is consulted, disapproves of what he has already resolved to do, he rejects the counsel given. Such was the dissimulation described by the Prophet, when the leaders of the forces and the whole people came to him.
He mentions, first, the leaders of the forces, and then John the son of Kareah, and Jezaniah the son of Hoshiah He adds these two last; but it was to give them honor, as when the angel said,
“Go and tell his disciples and Peter.” (Mark 16:7)
He did not put aside Peter, as though he was inferior to all the rest; but for the sake of honor he mentions his name, after having spoken generally of them all. So also here, the Prophet names generally the leaders, but as John the son of Kareah, and Jezaniah were the chief men, he expressly gives their names. He adds, the whole people, from the least to the greatest This does not refer to age; but what he means is, that all, of every grade, came with one consent to Jeremiah. It was not then the conspiring of a few men, but all from the least to the greatest had resolved to go to Egypt; and yet they came, as though with an honest purpose, to the Prophet; wherefore? They wished their own perverse design to be approved by God, and thus to subject God to their own will and humor; for they did not suffer themselves to be ruled by his Spirit, but audaciously disregarded his word. The Prophet then shews that they were all implicated in the same sin.