1 Kings 19:8-10

He got up, ate and drank his fill, and set out. Nourished by that meal, he walked forty days and nights, all the way to the mountain of God, to Horeb. When he got there, he crawled into a cave and went to sleep. Then the word of GOD came to him: “So Elijah, what are you doing here?” “I’ve been working my heart out for the GOD-of-the-Angel-Armies,” said Elijah. “The people of Israel have abandoned your covenant, destroyed the places of worship, and murdered your prophets. I’m the only one left, and now they’re trying to kill me.”