What does Jeremiah 39:16 mean?

'Go and tell Ebed-melech the Cushite, “This is what the Lord of Armies, the God of Israel, says: I’m about to bring my words against this city—everything I warned about, not good news but disaster. It’s all going to happen right in front of you.”' Jeremiah 39:16 - Modern Text Bible

(God tells Jeremiah to deliver a message to Ebed-melech: the coming destruction is certain and will be witnessed firsthand.)