2 Kings 2:6-8

6And Elijah said to Elisha, “Please stay here, for the LORD has sent me on to the Jordan.”

But Elisha replied, “As surely as the LORD lives and as you yourself live, I will not leave you.”

So the two of them went on.

7Then a company of fifty of the sons of the prophets went and stood at a distance, facing Elijah and Elisha as the two of them stood by the Jordan. 8And Elijah took his cloak, rolled it up, and struck the waters, which parted to the right and to the left, so that the two of them crossed over on dry ground.