2 Kings 2:13-14

He took up also the mantle of Elijah that fell from him, and went back, and stood by the bank of Jordan; and he took the mantle of Elijah that fell from him, and smote the waters, and said, Where is the LORD God of Elijah? and when he also had smitten the waters, they parted hither and thither: and Elisha went over.