2 Kings 10:10
Know now that there shall fall unto the earth nothing of the word of the Lord, which the Lord spake concerning the house of Ahab: for the Lord hath done that which he spake by his servant Elijah.
Cross-reference
2 Kings 10:14 shows Jehu killing Ahaziah's relatives—part of the same purge that fulfills the prophecy mentioned here.
2 Kings 10:17 directly states that Jehu destroyed Ahab's remnant, fulfilling the Lord's word through Elijah—same event as this verse.
In 2 Kings 9:7-10, Elijah prophesied the destruction of Ahab's house — this is the very word Jehu declares is now fulfilled.
In 2 Kings 9:36, Jehu cites the exact prophecy about Jezebel being eaten by dogs — the same word Jehu declares fulfilled in 10:10.
2 Kings 15:12 records the fulfillment of God's promise to Jehu that his descendants would reign—another word from God coming true.
1 Samuel 3:19 says none of Samuel's words 'fell to the ground'; Jehu echoes that exact idiom, affirming God's word through Elijah is fulfilled.
In 1 Kings 21:19, Elijah prophesied that dogs would lick Ahab's blood — part of the same word against Ahab's house that Jehu says is fulfilled.
In 1 Kings 21:21-24, Elijah pronounces judgment on Ahab's entire house and Jezebel — the very word Jehu declares has not fallen to the ground.
In 1 Kings 21:29, God delays judgment on Ahab due to his humility but says it will come on his son — showing God's word still stands, as fulfilled in Jehu's purge.
2 Chronicles 22:8 gives the parallel account of Jehu executing judgment on Ahab's house, confirming the same event.
Hosea 1:4 later condemns Jehu's bloodshed at Jezreel, showing that his violent fulfillment of prophecy itself brought judgment.
Zechariah 1:6 confirms that God's words through the prophets always 'take hold' — they are accomplished, just as Elijah's words against Ahab came true.