SEV Biblia, Chapter 19:6 Y oyendo Saúl la voz de Jonatán, juró: Vive el SEÑOR, que no morirá.
Clarke's Bible Commentary - 1 Samuel 19:6 Verse 6. He shall not be slain.] In consequence of this oath, we may suppose he issued orders contrary to those which he had given the preceding day.
John Gill's Bible Commentary Ver. 6. And Saul hearkened unto the voice of Jonathan , etc.] Not only heard him out what he had to say, but was affected with it, and wrought upon by it, and was convicted for the present that he was wrong in seeking the life of David, and therefore would desist from it; the Lord working upon his mind by what Jonathan said, and inclined him to listen to it, and act accordingly: and Saul sware, [as] the Lord liveth, he shall not be slain ; this oath he added to what he said to Jonathan, for the confirmation of it; and which was taken either with a real intention to keep it, though that intention did not long continue; or with a view to deceive Jonathan, that he might acquaint David with it, and so prevent his flight and escape, and that he might the more easily fall into his hands; but the former seems rather to be the case.
Matthew Henry Commentary Verses 1-10 - How forcible are right words! Saul was, for a time, convinced of the unreasonableness of his enmity to David; but he continued his malic against David. So incurable is the hatred of the seed of the serpen against that of the woman; so deceitful and desperately wicked is the heart of man without the grace of God, Jer 17:9.
Original Hebrew וישׁמע 8085 שׁאול 7586 בקול 6963 יהונתן 3083 וישׁבע 7650 שׁאול 7586 חי 2416 יהוה 3068 אם 518 יומת׃ 4191