Matthew Henry on Jeremiah 42:7–end
We have here the answer which Jeremiah was sent to deliver to those who employed him to ask counsel of God.
I. It did not come immediately, not till ten days after, Jer 42:7. They were thus long held in suspense, perhaps, to punish them for their hypocrisy or to show that Jeremiah did not speak of himself, nor what he would, for he could not speak when he would, but must wait for instructions. However, it teaches us to continue waiting upon God for direction in our way. The vision is for an appointed time, and at the end it shall speak.
II. When it did come he delivered it publicly, both to the captains and to all the people, from the meanest to those in the highest station; he delivered it…
Read the whole note in the consoleJamieson-Fausset-Brown on Jeremiah 42:7
ten days--Jeremiah did not speak of himself, but waited God's time and revelation, showing the reality of his inspiration. Man left to himself would have given an immediate response to the people, who were impatient of delay. The delay was designed to test the sincerity of their professed willingness to obey, and that they should have full time to deliberate (Deu 8:2). True obedience bows to God's time, as well as His way and will.
John Gill on Jeremiah 42:7
And it came to pass after ten days, that the word of the Lord came unto Jeremiah. Abarbinel thinks it was on the tenth day of the seventh month, the day of atonement, that the answer was returned; but it is clear, from the context, that it was ten days from the time the Jews applied to the prophet to inquire of the Lord for them, and he promised to do it, that this word came from the Lord to him; not that he was praying all this while, as some think; but, having spread the case before the Lord, he waited for an answer; which was deferred, that it might have the greater weight with it when it came; and that it might appear that it was not of the prophet himself, a device of his own; and chief…
Read the whole note in the consoleJohn Calvin