2 Kings 2:8-10

Young's Literal Translation

⁸ And Elijah taketh his robe, and wrappeth [it] together, and smiteth the waters, and they are halved, hither and thither, and they pass over both of them on dry land.

⁹ And it cometh to pass, at their passing over, that Elijah hath said unto Elisha, `Ask, what do I do for thee before I am taken from thee?' and Elisha saith, `Then let there be, I pray thee, a double portion of thy spirit unto me;'

¹⁰ and he saith, `Thou hast asked a hard thing; if thou dost see me taken from thee, it is to thee so; and if not, it is not.'