1 Samuel 20:2-3

2And he said to him, Far be it from thee; thou shalt not die: behold, my father will do nothing either great or small, but that he will show it to me: and why should my father hide this thing from me? it is not so .1

3And David swore moreover, and said, Thy father certainly knoweth that I have found grace in thy eyes; and he saith, Let not Jonathan know this, lest he should be grieved: but truly as the LORD liveth, and as thy soul liveth, there is but a step between me and death.