29 Does not my word burn like fire?" says the Lord . "Is it not like a mighty hammer that smashes a rock to pieces? 30 "Therefore," says the Lord, "I am against these prophets who steal messages from each other and claim they are from me. 31 I am against these smooth-tongued prophets who say, 'This prophecy is from the Lord !' 32 I am against these false prophets. Their imaginary dreams are flagrant lies that lead my people into sin. I did not send or appoint them, and they have no message at all for my people. I, the Lord, have spoken!

33 "Suppose one of the people or one of the prophets or priests asks you, 'What prophecy has the Lord burdened you with now?' You must reply, 'You are the burden! The Lord says he will abandon you!' 34 "If any prophet, priest, or anyone else says, 'I have a prophecy from the Lord,' I will punish that person along with his entire family.

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.