John Gill's Bible Commentary Ver. 8. Then said Abishai to David , etc.] Seeing Saul fast asleep, and a spear so near him: God hath delivered thine enemy into thine hand this day : or at this time, properly it was night: now therefore let me smite him, I pray thee, with the spear ; with Saul’s own spear, which was stuck in the ground at his bolster. He remembered that David would not put forth his hand to stay him before, when he had an opportunity; and since now another offered, he did not move it to him to do it, but begged leave to do it himself; which he might think would be granted, since there was such a remarkable hand of Providence in it, which seemed to direct to such a step: even to the earth at once, and I will not [smite] him the second time ; signifying, that he would give such a home blow or thrust, that the spear should pierce through him, and fasten him to the ground, that there would be no need to repeat it.
Matthew Henry Commentary
Verses 1-12 - How soon do unholy hearts lose the good impressions convictions have made upon them! How helpless were Saul and all his men! All as thoug disarmed and chained, yet nothing is done to them; they are onl asleep. How easily can God weaken the strongest, befool the wisest, an baffle the most watchful! David still resolved to wait till God though fit to avenge him on Saul. He will by no means force his way to the promised crown by any wrong methods. The temptation was very strong but if he yielded, he would sin against God, therefore he resisted the temptation, and trusted God with the event.
Original Hebrew ויאמר559 אבישׁי52 אל413 דוד1732 סגר5462 אלהים430 היום3117 את853 אויבך341 בידך3027 ועתה6258 אכנו5221 נא4994 בחנית2595 ובארץ776 פעם6471 אחת259 ולא3808 אשׁנה׃8138