2 Kings 1:16
And he said unto him, Thus saith the Lord, Forasmuch as thou hast sent messengers to enquire of Baal–zebub the god of Ekron, is it not because there is no God in Israel to enquire of his word? therefore thou shalt not come down off that bed on which thou art gone up, but shalt surely die.
Cross-reference
In 2 Kings 1:3, the same prophetic words were spoken to the messengers; Elijah repeats them directly to Ahaziah.
In 2 Kings 1:4, the verdict is already given; here Elijah pronounces it in person to the king.
In 2 Kings 1:6, the messengers report Elijah's words; here Elijah delivers the identical message himself.
2 Kings 1:2 describes Ahaziah's injury and consultation of Baal-Zebub — the sin that leads to this judgment.
1 Kings 21:18-24 records Elijah's judgment on Ahab; now he judges Ahab's son Ahaziah, continuing the prophetic pattern.
Genesis 3:4 has the serpent saying 'you will not certainly die' — directly opposing the 'you will certainly die' judgment here.
Luke 1:17 identifies John the Baptist as coming in the spirit and power of this same Elijah — a typological fulfillment.
Ezekiel 14:4 shows God answering those who consult idols according to their idols — the same principle as Ahaziah consulting Baal-zebub.
1 Kings 14:6-13 pronounces judgment on Jeroboam's house for idolatry; here Elijah judges Ahaziah for similar sin.
1 Kings 14:12 also contains a death prophecy from a prophet — similar pattern of God's judgment announced.
1 Kings 21:17 shows Elijah receiving God's word to confront Ahab — the same prophet who delivers this death sentence.
Hosea 6:5 speaks of God slaying through the words of prophets — the same prophetic word that here pronounces Ahaziah's death.