Swear now... — This is the same request that Jonathan made in 1 Samuel 20:15. The deep, genealogical feeling of the Israelites i…

Swear now therefore unto me. —Saul was so strongly convinced at this moment that David would before long occupy the throne of Israel that …

Swear now therefore to me by the Lord
By the Word of the Lord, as the, Targum:

that you will not …

Saul speaks as if completely overcome by David's kindness. Many mourn for their sins but do not truly repent of them; they weep bitterly for them, …