1 Samuel 18:3

18:3 Jonathan made a covenant with David, for he loved him as much as he did his own life.

1 Samuel 20:8

20:8 You must be loyal to your servant, for you have made a covenant with your servant in the Lord’s name. If I am guilty, you yourself kill me! Why bother taking me to your father?”

1 Samuel 20:15

20:15 Don’t ever cut off your loyalty to my family, not even when the Lord has cut off every one of David’s enemies from the face of the earth

1 Samuel 20:17

20:17 Jonathan once again took an oath with David, because he loved him. In fact Jonathan loved him as much as he did his own life.

1 Samuel 20:42

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.’”

David Goes to Nob

(21:1)

Then David got up and left, while Jonathan went back to the city.

1 Samuel 23:18

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.