Now Elisha the prophet summoned one of the sons of the prophets and said to him, “Tuck your cloak under your belt, take this flask of oil, and go to Ramoth-gilead.
We have here the anointing of Jehu to be king, who was, at this time, a commander (probably commander-in-chief) of the forces employed at Ramoth-Gilead, Kg2 9:14. There he was fighting for the king his master, but received orders from a higher king to fight against him.
Commenting on 2 Kings 9:1-10
And Elisha the prophet called one of the children of the prophets,.... Who the Jews generally say (k) was Jonah the son of Amittai: and said, gird up thy loins; his loose and long garments about his loins, for quicker dispatch in travelling: and take this box of oil in thine hand; for an use after directed to: and go to Ramothgilead; where Joram had...
And Elisha the prophet called one of the children of the prophets, and said unto him, Gird up thy loins, and take this box of oil in thine hand, and go to Ramothgilead: (a) Prepare yourself to go diligently about your business for in those countries they used long garments which they tucked up when they went about earnest business.