When Joram saw Jehu, he asked, “Have you come in peace, Jehu?” “How can there be peace,” he replied, “as long as the idolatry and witchcraft of your mother Jezebel abound?”
From Ramoth-Gilead to Jezreel was more than one day's march; about the mid-way between them the river Jordan must be crossed. We may suppose Jehu to have marched with all possible expedition, and to have taken the utmost precaution to prevent the tidings from getting to Jezreel before him; and, at length, we have him within sight first, and then within reach, of the devoted king. I.
Commenting on 2 Kings 9:16-29
Then said Jehu to Bidkar his captain,.... Not Joram's, but Jehu's captain, though he had been the former's, and his father Ahab's also: take up, and cast him in the portion of the field of Naboth the Jezreelite; near to which they were: for remember how that, when I and thou rode together after Ahab his father; either in the same chariot, or on horseback...
And it came to pass, when Joram saw Jehu, that he said, [Is it] peace, Jehu? And he answered, What peace, so long as the whoredoms of thy mother Jezebel and her witchcrafts [are so] many? (g) Meaning, since God is their enemy because of their sins, he will always stir up someone to avenge his cause.