'As Your Soul Lives' in the Bible

And Elijah said unto Elisha, Tarry here, I pray you; for the LORD has sent me to Beth-el. And Elisha said unto him, As the LORD lives, and as your soul lives, I will not leave you. So they went down to Beth-el.

And Elijah said unto him, Elisha, tarry here, I pray you; for the LORD has sent me to Jericho. And he said, As the LORD lives, and as your soul lives, I will not leave you. So they came to Jericho.

And Elijah said unto him, Tarry, I pray you, here; for the LORD has sent me to Jordan. And he said, As the LORD lives, and as your soul lives, I will not leave you. And they both went on.

And the mother of the child said, As the LORD lives, and as your soul lives, I will not leave you. And he arose, and followed her.