Matthew Henry on Jeremiah 18:1-10
The prophet is here sent to the potter's house (he knew where to find it), not to preach a sermon as before to the gates of Jerusalem, but to prepare a sermon, or rather to receive it ready prepared. Those needed not to study their sermons that had them, as he had this, by immediate inspiration. "Go to the potter's house, and observe how he manages his work, and there I will cause thee, by silent whispers, to hear my words. There thou shalt receive a message, to be delivered to the people." Note, Those that would know God's mind must observe his appointments, and attend where they may hear his words. The prophet was never disobedient to the heavenly vision, and therefore went to the potter's…
Read the whole note in the consoleJamieson-Fausset-Brown on Jeremiah 18:8
their evil--in antithesis to, "the evil that I thought to do."
repent--God herein adapts Himself to human conceptions. The change is not in God, but in the circumstances which regulate God's dealings: just as we say the land recedes from us when we sail forth, whereas it is we who recede from the land (Eze 18:21; Eze 33:11). God's unchangeable principle is to do the best that can be done under all circumstances; if then He did not take into account the moral change in His people (their prayers, &c.), He would not be acting according to His own unchanging principle (Jer 18:9-10). This is applied practically to the Jews' case (Jer 18:11; see Jer 26:3; Jon 3:10).
John Gill on Jeremiah 18:9
And at what instant I shall speak concerning a nation, and concerning a kingdom,.... By way of promise on the other hand: or, "and the moment I shall speak", &c. as in Jeremiah 18:7; in favour to a people; signifying, that if they do that which is right and good, and continue therein, it may be expected that I will appear for and among such a nation and kingdom:
to build and to plant it; to build up its fences that have been broken down, and to plant it with pleasant plants, and make it prosperous and flourishing, and protect and defend it, and keep it safe, and in a secure condition; so that it shall be in very thriving circumstances, and be out of the power of its enemies to hurt it.