And Saul hearkened unto the voice of Jonathan: and Saul swore, As the LORD lives, he shall not be slain.
Read Chapter 19
Bede
AD 735
When the people of the Jews heard the voice of the apostles preaching, they were calmed down from the anger of their earlier fury and declared in a true affirmation of faith that the church of Christ would never be able to be wiped out from their midst and that the memory of him who is before all ages and endures for eternity would never perish. - "Four Books on 1 Samuel 3.19"
Slain. His inconstant temper might cause him to be moved with the expostulation of his son; but he presently relapsed, if he were ever sincere. (Calmet)
The Scripture seems to insinuate that he was. (Menochius)
