2 Kings 2:4-5

4Then Elijah said to him, “Elisha, stay here, please, for the Lord has sent me on to Jericho.” But he said, “As the Lord lives, and as your soul lives, I will not leave you!” So they came to Jericho.

5Now the sons of the prophets who were at Jericho came to Elisha and said to him, “Do you know that the Lord will take away your master from over you today?” So he answered, “Yes, I know; keep silent!”