Background and Context:
Jehu, son of Jehoshaphat and grandson of Nimshi, emerges as a pivotal figure in the history of Israel during the tumultuous period of the divided monarchy. His rise to power is marked by divine intervention and prophetic fulfillment, as he is chosen by God to execute judgment on the house of Ahab and eradicate Baal worship from Israel. The narrative of Jehu's anointing is primarily found in 2 Kings 9, set against the backdrop of the spiritual and moral decline of Israel under the rule of Ahab and his descendants.

Anointing by Elisha's Messenger:
The prophet Elisha, successor to Elijah, plays a crucial role in Jehu's anointing. In 2 Kings 9:1-3 , Elisha instructs one of the sons of the prophets to take a flask of oil and go to Ramoth-gilead, where Jehu is stationed as a commander in the army. The young prophet is to anoint Jehu privately, away from the eyes of others, and declare him king over Israel. This secretive anointing underscores the divine orchestration of Jehu's rise and the urgency of his mission.

The Anointing Ceremony:
Upon reaching Ramoth-gilead, the young prophet finds Jehu among his fellow officers. He takes Jehu aside into a private chamber and pours the oil on his head, delivering the message from the Lord: "This is what the LORD, the God of Israel, says: ‘I anoint you king over the LORD’s people Israel. You are to strike down the house of your master Ahab, so that I may avenge the blood of My servants the prophets and all the servants of the LORD who died at the hand of Jezebel’" (2 Kings 9:6-7). This anointing signifies Jehu's divine appointment and the beginning of his mission to cleanse Israel of idolatry and apostasy.

Jehu's Acceptance and Proclamation:
After the prophet departs, Jehu returns to his fellow officers, who inquire about the unusual visit. Initially dismissive, Jehu eventually reveals the prophet's message. The officers respond with immediate support, laying their garments under him on the bare steps and blowing the trumpet, proclaiming, "Jehu is king!" (2 Kings 9:13). This spontaneous acclamation reflects the readiness of the military and the people to embrace Jehu's leadership and the divine mandate he carries.

Significance in Israel's History:
Jehu's anointing marks a turning point in Israel's history. His subsequent actions fulfill the prophetic words spoken by Elijah concerning the house of Ahab (1 Kings 21:21-24). Jehu's zeal in executing judgment on Ahab's descendants and eradicating Baal worship aligns with the covenantal demands of the God of Israel. His reign, though marked by violence, is seen as a necessary purging to restore the worship of Yahweh and eliminate the pervasive influence of Canaanite idolatry.

Theological Implications:
Jehu's anointing and subsequent actions highlight themes of divine sovereignty, judgment, and the fulfillment of prophecy. His account serves as a reminder of God's active role in the affairs of nations and His commitment to uphold His covenant with Israel. Jehu's mission underscores the seriousness with which God views idolatry and apostasy, and the lengths to which He will go to preserve the purity of His people.