Cross reference
1 Samuel 20:15
15 but also you shall not cut off your kindness from my house forever; no, not when Yahweh has cut off the enemies of David everyone from the surface of the earth.
2 Samuel 21:7
7 But the king spared Mephibosheth, the son of Jonathan the son of Saul, because of Yahweh's oath that was between them, between David and Jonathan the son of Saul.
1 Samuel 24:21
21 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.
2 Samuel 9:1-7
1 David said, Is there yet any who is left of the house of Saul, that I may show him kindness for Jonathan's sake?
2 There was of the house of Saul a servant whose name was Ziba, and they called him to David; and the king said to him, Are you Ziba? He said, Your servant is he.
3 The king said, Is there not yet any of the house of Saul, that I may show the kindness of God to him? Ziba said to the king, Jonathan has yet a son, who is lame of his feet.
4 The king said to him, Where is he? Ziba said to the king, Behold, he is in the house of Machir the son of Ammiel, in Lo Debar.
5 Then king David sent, and fetched him out of the house of Machir the son of Ammiel, from Lo Debar.
6 Mephibosheth, the son of Jonathan, the son of Saul, came to David, and fell on his face, and did obeisance. David said, Mephibosheth. He answered, Behold, your servant!
7 David said to him, "Don't be afraid of him; for I will surely show you kindness for Jonathan your father's sake, and will restore you all the land of Saul your father; and you shall eat bread at my table continually."