What does Jeremiah 23:19 mean?

Yahweh of Armies says, “Don’t listen to the words of the prophets who prophesy to you. They teach you vanity. They speak a vision of their own heart, and not out of the mouth of Yahweh.

They say continually to those who despise me, ‘Yahweh has said, “You will have peace;”’ and to everyone who walks in the stubbornness of his own heart they say, ‘No evil will come on you.’

For who has stood in the council of Yahweh, that he should perceive and hear his word? Who has listened to my word, and heard it?

Yahweh’s anger will not return until he has executed, and until he has performed the intents of his heart. In the latter days, you will understand it perfectly.

I didn’t send these prophets, yet they ran. I didn’t speak to them, yet they prophesied.

But if they had stood in my council, then they would have caused my people to hear my words, and would have turned them from their evil way, and from the evil of their doings.