1 Samuel 24:4-6

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. And afterward David’s heart struck him, because he had cut off a corner of Saul’s robe. 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.”