2 Kings 2:9-12

9And it came to pass, when they were gone over, that Elijah said unto Elisha, Ask what I shall do for thee, before I be taken from thee. And Elisha said, I pray thee, let a double portion of thy spirit be upon me.

10And he said, Thou hast asked a hard thing: nevertheless, if thou see me when I am taken from thee, it shall be so unto thee; but if not, it shall not be so.

11And it came to pass, as they still went on, and talked, that, behold, there appeared a chariot of fire, and horses of fire, which parted them both asunder; and Elijah went up by a whirlwind into heaven.

12And Elisha saw it, and he cried, My father, my father, the chariots of Israel and the horsemen thereof! And he saw him no more: and he took hold of his own clothes, and rent them in two pieces.