And David sware moreover - Rather, “yet again.” He met Jonathan’s denial by repeating his statement and confirming it with an oath.
Related Commentaries of 1 Samuel 20:3
1 Samuel 20:3
3 And David sware moreover, and said, Thy father certainly knoweth that I have found grace in thine eyes; and he saith, Let not Jonathan know this, lest he be grieved: but truly as the LORD liveth, and as thy soul liveth, there is but a step between me and death.