1 Samuel 23:18
When the two of them had made a covenant before the Lord, David stayed on at Horesh, but Jonathan went to his house.
1 Samuel 18:3
Jonathan made a covenant with David, for he loved him as much as he did his own life.
1 Samuel 20:42
Jonathan said to David, "Go in peace, for the two of us have sworn together in the name of the Lord saying, 'The Lord will be between me and you and between my descendants and your descendants forever.'"Then David got up and left, while Jonathan went back to the city.
2 Samuel 21:7
The king had mercy on Mephibosheth son of Jonathan, the son of Saul, in light of the Lord's oath that had been taken between David and Jonathan son of Saul.
2 Samuel 9:1
Then David asked, "Is anyone still left from the family of Saul, so that I may extend kindness to him for the sake of Jonathan?"
1 Samuel 20:12-17
Jonathan said to David, "The Lord God of Israel is my witness. I will feel out my father about this time the day after tomorrow. If he is favorably inclined toward David, will I not then send word to you and let you know?