1 Samuel 20:3

And David in reply to Jonathan, said, Thy father knoweth well, that I have found favour in thy sight, therefore he said, Jonathan must not know this. He will not consent. But as the Lord liveth, and thy soul liveth, it is as I said. There is but a step between me and death.

And David answered Jonathan, and said, Thy father knows surely that I have found grace in thy sight, and he said, Let not Jonathan know this, lest he refuse his consent: but as the Lord lives and thy soul lives, as I said, the space is filled up between me and death.