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

1 Samuel 25:24-31
And fell at his feet, and said, On me, my lord, on me let this iniquity be: and let your handmaid, I pray you, speak in your audience, and hear the words of your handmaid.
Torrey's Topical Textbook—AKJV

1 Samuel 26:9
And David said to Abishai, Destroy him not: for who can stretch forth his hand against the LORD's anointed, and be guiltless?
Torrey's Topical Textbook—AKJV