1 Samuel 24 - Bíblia Online

And it came to pass, when Saul had returned from following the Philistines, that it was told him, saying, Look, David is in the wilderness of En-gedi. 
Then Saul took three thousand chosen men out of all Israel, and went to seek David and his men on the rocks of the wild goats. 
And he came to the sheepcotes by the way, where there was a cave; and Saul went in to relieve himself. Now David and his men were dwelling in the innermost parts of the cave. 
And the men of David said to him, Look, the day of which Yahweh said to you, Look, I will deliver your enemy into your hand, and you will do to him as it will seem good to you. Then David arose, and cut off the skirt of Saul's robe secretly. 
And it came to pass afterward, that David's heart struck him, because he had cut off Saul's skirt. 
And he said to his men, Yahweh forbid that I should do this thing to my lord, Yahweh's anointed, to put forth my hand against him, seeing he is Yahweh's anointed. 
So David checked his men with these words, and did not allow them to rise against Saul. And Saul rose up out of the cave, and went on his way. 
David also arose afterward, and went out of the cave, and cried after Saul, saying, My lord the king. And when Saul looked behind him, David bowed with his face to the earth, and did obeisance. 
And David said to Saul, Why do you harken to the words of man, saying, Look, David seeks your hurt? 
Look, this day your eyes have seen how that Yahweh had delivered you today into my hand in the cave: and some bade me kill you; but [I] spared you; and I said, I will not put forth my hand against my lord; for he is Yahweh's anointed. 
Moreover, my father, see, yes, see the skirt of your robe in my hand; for in that I cut off the skirt of your robe, and didn't kill you, know and see that there is neither evil nor transgression in my hand, and I haven't sinned against you, though you hunt after my life to take it. 
Yahweh judge between me and you, and Yahweh avenge me of you; but my hand will not be on you. 
As says the proverb of the ancients, Out of the wicked comes forth wickedness; but my hand will not be on you. 
After whom has the king of Israel come out? After whom do you pursue? After a dead dog, after a flea. 
Yahweh therefore be judge, and give sentence between me and you, and see, and plead my cause, and deliver me out of your hand. 
And it came to pass, when David had made an end of speaking these words to Saul, that Saul said, Is this your voice, my son David? And Saul lifted up his voice, and wept. 
And he said to David, You are more righteous than I; for you have rendered to me good, whereas I have rendered to you evil. 
And you have declared this day how that you have dealt well with me, since when Yahweh had delivered me up into your hand, you didn't kill me. 
For if a man finds his enemy, will he let him go away well? Therefore [may] Yahweh reward you good for that which you have done to me this day. 
And now, look, I know that you will surely be king, and that the kingdom of Israel will be established in your hand. 
Swear now therefore to me by Yahweh, that you will not cut off my seed after me, and that you will not destroy my name out of my father's house. 
And David swore to Saul. And Saul went home; but David and his men got up to the stronghold. 
1 Samuel 25