Nebuchadnezzar ...is waging war against us: This likely happened around the start of the siege of Jerusalem in 588 BC (2 Kings 25:1).
Zedekiah did not pray to the Lord like his ancestor Hezekiah did (2 Kings 19:14–20, 29–37; 2 Chronicles 32:20–22; Isaiah 37:1–7, 14–20). However, the king expected Jeremiah to perform a miracle to turn away the Lord's anger.