1. What God here requires of him as the condition of the further favours he designed him. Jeremiah had done and suffered much for God, yet God is no debtor to him, but he is still upon his good behaviour. God will own him. But, (1.) He must recover his temper, and be reconciled to his work, and friends with it again, and not quarrel with it any more as he had done. He must return, must shake off these distrustful discontented thoughts and passions, and not give way to them, must regain the peaceable possession and enjoyment of himself, and resolve to be easy. Note, When we have stepped aside into any disagreeable frame or way our care must be to return and compose ourselves into a right temper of mind again; and then we may expect God will help us, if thus we endeavour to help ourselves. (2.) He must resolve to be faithful in his work, for he could not expect the divine protection any longer than he did approve himself so. Though there was no cause at all to charge Jeremiah with unfaithfulness, and God knew his heart to be sincere, yet God saw fit to give him this caution. Those that do their duty must not take it ill to be told their duty. In two things he must be faithful:—[1.] He must distinguish between some and others of those he preached to: Thou must take forth the precious from the vile. The righteous are the precious be they ever so mean and poor; the wicked are the vile be they ever so rich and great. In our congregations these are mixed, wheat and chaff in the same floor; we cannot distinguish them by name, but we must by character, and must give to each a portion, speaking comfort to precious saints and terror to vile sinners, neither making the heart of the righteous sad nor strengthening the hands of the wicked (Ezek. xiii. 22), but rightly dividing the word of truth. Ministers must take those whom they see to be precious into their bosoms, and not sit alone as Jeremiah did, but keep up conversation with those they may do good to and get good by. [2.] He must closely adhere to his instructions, and not in the least vary from them: Let them return to thee, but return not thou to them, that is, he must do the utmost he can, in his preaching, to bring people up to the mind of God; he must tell them they must, at their peril, comply with that. Those that had flown off from him, that did not like the terms upon which God's favour was offered to them, "Let them return to thee, and, upon second thoughts, come up to the terms and strike the bargain; but do not thou return to them, do not compliment them, nor comply with them, nor think to make the matter easier to them than the word of God has made it." Men's hearts and lives must come up to God's law and comply with that, for God's law will never come down to them nor comply with them.