2 Kings 2:5-8

The sons of the prophets who were at Jericho approached Elisha and said to him, “Do you know that the LORD will take your master away from you today?” And he answered, “Yes, I know it; be quiet [about it].” Elijah said to him, “Please stay here, for the LORD has sent me to the Jordan.” But he said, “As the LORD lives and as your soul lives, I will not leave you.” So the two of them went on. Fifty men of the sons of the prophets also went and stood opposite them [to watch] at a distance; and the two of them stood by the Jordan. And Elijah took his mantle (coat) and rolled it up and struck the waters, and they were divided this way and that, so that the two of them crossed over on dry ground.