1 Samuel 15:6; 1 Samuel 20:8; 1 Samuel 20:14-15

6 Saul said to the Kenites, "Go, depart, go down from among the Amalekites, so that I do not destroy you with them; for you showed kindness to all the sons of Israel when they came up from Egypt." So the Kenites departed from among the Amalekites.
8 "Therefore deal kindly with your servant, for you have brought your servant into a covenant of the LORD with you. But if there is iniquity in me, put me to death yourself; for why then should you bring me to your father?"
14 "If I am still alive, will you not show me the lovingkindness of the LORD , that I may not die? 15 "You shall not cut off your lovingkindness from my house forever , not even when the LORD cuts off every one of the enemies of David from the face of the earth."