After a long time, the word of the Lord came to Elijah in the third year: "Go and present yourself to Ahab. I will send rain on the surface of the land."
References for 1 Kings 18:1
So Elijah went to present himself to Ahab. The famine was severe in Samaria.
Ahab called for Obadiah, who was in charge of the palace. Obadiah was a man who greatly feared the Lord
and took 100 prophets and hid them, 50 men to a cave, and provided them with food and water when Jezebel slaughtered the Lord's prophets.
Ahab said to Obadiah, "Go throughout the land to every spring of water and to every wadi. Perhaps we'll find grass so we can keep the horses and mules alive and not have to destroy any cattle."
They divided the land between them in order to cover it. Ahab went one way by himself, and Obadiah went the other way by himself.
While Obadiah was [walking] along the road, Elijah suddenly met him. When Obadiah recognized him, he fell with his face [to the ground] and said, "Is it you, my lord Elijah?"
"It is I," he replied. "Go tell your lord, 'Elijah is here!' "