NET
6 Saul accepted Jonathan’s advice and took an oath, “As surely as the Lord lives, he will not be put to death.”
Darby
6 And Saul hearkened to the voice of Jonathan, and Saul swore, [As] Jehovah liveth, he shall not be put to death!
KJV
6 And Saul hearkened unto the voice of Jonathan: and Saul sware, [As] the LORD liveth, he shall not be slain.