2 Samuel 3:12-13, 21

Abner went ahead and sent personal messengers to David: “Make a deal with me and I’ll help bring the whole country of Israel over to you.” “Great,” said David. “It’s a deal. But only on one condition: You’re not welcome here unless you bring Michal, Saul’s daughter, with you when you come to meet me.”

Abner then said, “I’m ready. Let me go now to rally everyone in Israel for my master, the king. They’ll make a treaty with you, authorizing you to rule them however you see fit.” Abner was sent off with David’s blessing.