29 Is not my word like fire? says the Lord; and like a hammer, smashing the rock to bits? 30 For this cause I am against the prophets, says the Lord, who take my words, every one from his neighbour. 31 See, I am against the prophets, says the Lord, who let their tongues say, He has said. 32 See, I am against the prophets of false dreams, says the Lord, who give them out and make my people go out of the way by their deceit and their uncontrolled words: but I did not send them or give them orders; and they will be of no profit to this people, says the Lord.

33 And if this people, or the prophet, or a priest, questioning you, says, What word of weight is there from the Lord? then you are to say to them, You are the word, for I will not be troubled with you any more, says the Lord. 34 And as for the prophet and the priest and the people who say, A word of weight from the Lord! I will send punishment on that man and on his house.

Matthew Henry's Commentary on Jeremiah 23:29-34

Commentary on Jeremiah 23:23-32

(Read Jeremiah 23:23-32)

Men cannot be hidden from God's all-seeing eye. Will they never see what judgments they prepare for themselves? Let them consider what a vast difference there is between these prophecies and those delivered by the true prophets of the Lord. Let them not call their foolish dreams Divine oracles. The promises of peace these prophets make are no more to be compared to God's promises than chaff to wheat. The unhumbled heart of man is like a rock; if not melted by the word of God as a fire, it will be broken to pieces by it as a hammer. How can they be long safe, or at all easy, who have a God of almighty power against them? The word of God is no smooth, lulling, deceitful message. And by its faithfulness it may certainly be distinguished from false doctrines.

Commentary on Jeremiah 23:33-40

(Read Jeremiah 23:33-40)

Those are miserable indeed who are forsaken and forgotten of God; and men's jesting at God's judgments will not baffle them. God had taken Israel to be a people near to him, but they shall now be cast out of his presence. It is a mark of great and daring impiety for men to jest with the words of God. Every idle and profane word will add to the sinner's burden in the day of judgment, when everlasting shame will be his portion.