2 Kings (Author Compiled by Isaiah and Jeremiah from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
2:6And Elijah said unto him, Tarry, I pray thee, here; for the LORD hath sent me to Jordan. And he said, As the LORD liveth, and as thy soul liveth, I will not leave thee. And they two went on.
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.