8 Then said Abishai to David, “God has delivered up your enemy into your hand this day. Now therefore please let me strike him with the spear to the earth at one stroke, and I will not strike him the second time.” 9 David said to Abishai, “Don’t destroy him; for who can put forth his hand against Yahweh’s anointed, and be guiltless?” 10 David said, “As Yahweh lives, Yahweh will strike him; or his day shall come to die; or he shall go down into battle and perish.
Matthew Henry's Commentary on 1 Samuel 26:8-10
Commentary on 1 Samuel 26:1-12
(Read 1 Samuel 26:1-12)
How soon do unholy hearts lose the good impressions convictions have made upon them! How helpless were Saul and all his men! All as though disarmed and chained, yet nothing is done to them; they are only asleep. How easily can God weaken the strongest, befool the wisest, and baffle the most watchful! David still resolved to wait till God thought 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.