29 "Is not My word like a fire?" says the Lord, "And like a hammer that breaks the rock in pieces? 30 "Therefore behold, I am against the prophets," says the Lord, "who steal My words every one from his neighbor. 31 Behold, I am against the prophets," says the Lord, "who use their tongues and say, 'He says.' 32 Behold, I am against those who prophesy false dreams," says the Lord, "and tell them, and cause My people to err by their lies and by their recklessness. Yet I did not send them or command them; therefore they shall not profit this people at all," says the Lord.

33 "So when these people or the prophet or the priest ask you, saying, 'What is the oracle of the Lord?' you shall then say to them, 'What oracle?' I will even forsake you," says the Lord. 34 And as for the prophet and the priest and the people who say, 'The oracle of the Lord!' I will even punish that man and 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.