And they two made a covenant before the LORD: and David abode in the wood, and Jonathan went to his house.
1 Samuel 18:3
Then Jonathan and David made a covenant, because he loved him as his own soul.
1 Samuel 20:12-17
12
And Jonathan said unto David, O LORD God of Israel, when I have sounded out my father tomorrow about this time, or the third day, and, behold, if there be good toward David, and I then send not unto you, and show it to you;
13
The LORD do so and much more to Jonathan: but if it pleases my father to do you evil, then I will show it to you, and send you away, that you may go in peace: and the LORD be with you, as he has been with my father.
14
And you shall not only while yet I live show me the kindness of the LORD, that I die not:
15
But also you shall not cut off your kindness from my house forever: no, not when the LORD has cut off the enemies of David every one from the face of the earth.
16
So Jonathan made a covenant with the house of David, saying, Let the LORD even require it at the hand of David's enemies.
17
And Jonathan caused David to swear again, because he loved him: for he loved him as he loved his own soul.
1 Samuel 20:42-17
2 Samuel 9:1
And David said, Is there yet any that is left of the house of Saul, that I may show him kindness for Jonathan’s sake?
2 Samuel 21:7
But the king spared Mephibosheth, the son of Jonathan the son of Saul, because of the LORD’S oath that was between them, between David and Jonathan the son of Saul.