2 Then Saul took three thousand chosen men out of all Israel, and went to seek David and his men on the rocks of the wild goats. 3 He came to the sheep pens by the way, where there was a cave; and Saul went in to relieve himself. Now David and his men were abiding in the innermost parts of the cave. 4 The men of David said to him, “Behold, the day of which Yahweh said to you, ‘Behold, I will deliver your enemy into your hand, and you shall do to him as it shall seem good to you.’” Then David arose, and cut off the skirt of Saul’s robe secretly. 5 It happened afterward, that David’s heart struck him, because he had cut off Saul’s skirt. 6 He said to his men, “Yahweh forbid that I should do this thing to my lord, Yahweh’s anointed, to put forth my hand against him, since he is Yahweh’s anointed.”
Matthew Henry's Commentary on 1 Samuel 24:2-6
Commentary on 1 Samuel 24:1-7
(Read 1 Samuel 24:1-7)
God delivered Saul into David's hand. It was an opportunity given to David to exercise faith and patience. He had a promise of the kingdom, but no command to slay the king. He reasons strongly, both with himself and with his men, against doing Saul any hurt. Sin is a thing which it becomes us to startle at, and to resist temptations thereto. He not only would not do this bad thing himself, but he would not suffer those about him to do it. Thus he rendered good for evil, to him from whom he received evil for good; and was herein an example to all who are called Christians, not to be overcome of evil, but to overcome evil with good.