1 Samuel 23:18
The two of them made a covenant in the LORD's presence. David remained at Horesh while Jonathan went home.
1 Samuel 18:3
Jonathan made a covenant with David because he loved him as he loved himself.
1 Samuel 20:42
Jonathan told David, "Go in peace since both of us swore in the name of the LORD: "May the LORD be between me and you, and between my descendants and your descendants forever.'" Then David got up and left, while Jonathan went to the city.
2 Samuel 21:7
So the king answered, "I will give them." The king exempted Mephibosheth, the son of Saul's son Jonathan, because of the promise to the LORD that existed between David and Saul's son Jonathan.
2 Samuel 9:1
Later on, David asked, "Is there anyone left alive from Saul's household to whom I can show gracious love in memory of Jonathan?"
1 Samuel 20:12-17
Jonathan told David, "The LORD God of Israel is my witness that I'll carefully question my father by tomorrow or the next day. And if the response is favorable for David, will I not then send word to you and let you know?