2 Kings 2:9-10

9 When they came to the other side, Elijah said to Elisha, “Tell me what I can do for you before I am taken away.” And Elisha replied, “Please let me inherit a double share of your spirit and become your successor.” 10 “You have asked a difficult thing,” Elijah replied. “If you see me when I am taken from you, then you will get your request. But if not, then you won’t.”