After Ahab's death, Moab1 rebelled against Israel.
References for 2 Kings 1:1
Now Ahaziah had fallen through the lattice of his upper room in Samaria and injured himself. So he sent messengers,2 saying to them, "Go and consult Baal-Zebub,3 the god of Ekron,4 to see if I will recover5 from this injury."
References for 2 Kings 1:2
But the angel6 of the LORD said to Elijah7 the Tishbite, "Go up and meet the messengers of the king of Samaria and ask them, 'Is it because there is no God in Israel8 that you are going off to consult Baal-Zebub, the god of Ekron?'
References for 2 Kings 1:3
Therefore this is what the LORD says: 'You will not leave9 the bed you are lying on. You will certainly die!' " So Elijah went.
References for 2 Kings 1:4
When the messengers returned to the king, he asked them, "Why have you come back?"
"A man came to meet us," they replied. "And he said to us, 'Go back to the king who sent you and tell him, "This is what the LORD says: Is it because there is no God in Israel that you are sending men to consult Baal-Zebub, the god of Ekron? Therefore you will not leave10 the bed you are lying on. You will certainly die!" ' "
References for 2 Kings 1:6