241 [1] When Saul returned from following the Philistines, he was told, "Behold, David is in the wilderness of Engedi." 2 Then Saul took three thousand chosen men out of all Israel and went to seek David and his men in front of the Wildgoats' Rocks. 3 And he came to the sheepfolds by the way, where there was a cave, and Saul went in to relieve himself.[2] Now David and his men were sitting in the innermost parts of the cave. 4 And the men of David said to him, "Here is the day of which the Lord said to you, 'Behold, I will give your enemy into your hand, and you shall do to him as it shall seem good to you.'" Then David arose and stealthily cut off a corner of Saul's robe. 5 And afterward David's heart struck him, because he had cut off a corner of Saul's robe. 6 He said to his men, "The Lord forbid that I should do this thing to my lord, the Lord's anointed, to put out my hand against him, seeing he is the Lord's anointed." 7 So David persuaded his men with these words and did not permit them to attack Saul. And Saul rose up and left the cave and went on his way.
Matthew Henry's Commentary on 1 Samuel 24:1-7
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.