1 Samuel 24:7
"So David stayed his servants with these words, and suffered them not to rise against Saul. But Saul rose up out of the cave, and went on his way."
Cross References (ranked by relevance)
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;
Psalm 7:4
If I have rewarded evil unto him that was at peace with me; (yea, I have delivered him that without cause is mine enemy:)
1 Samuel 25:33
And blessed be thy advice, and blessed be thou, which hast kept me this day from coming to shed blood, and from avenging myself with mine own hand.