1 Samuel 24:6
"And he said unto his men, The LORD forbid that I should do this thing unto my master, the LORD’s anointed, to stretch forth mine hand against him, seeing he is the anointed of the LORD."
Cross References (ranked by relevance)
2 Samuel 1:14
And David said unto him, How wast thou not afraid to stretch forth thine hand to destroy the LORD’s anointed?
1 Kings 21:3
And Naboth said to Ahab, The LORD forbid it me, that I should give the inheritance of my fathers unto thee.
Matthew 5:44
But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;
1 Thessalonians 5:15
See that none render evil for evil unto any man; but ever follow that which is good, both among yourselves, and to all men.