1 Samuel 24:13 - Matthew Poole's English Annotations on the Holy Bible

i.e. Wicked men will do wicked actions, among which this is one, to kill their sovereign lord and king; as David implied above, 1 Samuel 24:6, and more fully expresseth, 1 Samuel 26:9. And therefore if I were so wicked and vile a person as thy courtiers represent me to thee, I should make no conscience of laying wicked and violent hands upon thee, but should assassinate thee when I had opportunity; which because I have now neglected and refused to do, though moved to it by some of my wicked soldiers, know therefore that I am not guilty of any wicked designs against thee, but am just and innocent towards thee. Or thus, Wicked actions (such as that would have been if I had killed thee) proceed only from the wicked, of which number I am none, and therefore my hand shall not be upon thee.