2 Kings 2:9-12

And when they had crossed over, Elijah said to Elisha, “Ask what I shall do for you before I am taken from you.” And Elisha said, “Please let a double portion of your spirit be upon me.” 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].