1 Samuel 24:10
Behold, this day your eyes have seen how that the LORD had delivered you to day into my hand in the cave: and some bade me kill you: but my eye spared you; and I said, I will not put forth my hand against my lord; for he is the LORD's anointed.
Torrey's Topical Textbook—AKJV

2 Samuel 16:10,11
And the king said, What have I to do with you, you sons of Zeruiah? so let him curse, because the LORD has said to him, Curse David. Who shall then say, Why have you done so?
Torrey's Topical Textbook—AKJV