2 Kings 2:10-14

He said, “You have asked for a difficult thing. However, if you see me when I am taken from you, it shall be so for you; but if not, it shall not be so.” As they continued along and talked, behold, a chariot of fire with horses of fire [appeared suddenly and] separated the two of them, and Elijah went up to heaven in a whirlwind. Elisha saw it and cried out, “My father, my father, the chariot of Israel and its horsemen!” And he no longer saw Elijah. Then he took hold of his own clothes and tore them into two pieces [in grief]. He picked up the mantle of Elijah that fell off him, and went back and stood by the bank of the Jordan. He took the mantle of Elijah that fell from him and struck the waters and said, “Where is the LORD, the God of Elijah?” And when he too had struck the waters, they divided this way and that, and Elisha crossed over.