2 Kings 2:6-8

Then 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 you yourself live, I will not leave you.” So the two of them went on. Fifty men of the sons of the prophets also went and stood at some distance from them, as they both were standing by the Jordan. Then Elijah took his cloak and rolled it up and struck the water, and the water was parted to the one side and to the other, till the two of them could go over on dry ground.