1 Samuel 23:18
They both made a covenant before Yahweh: and David stayed in the woods, 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 20:42
Jonathan said to David, "Go in peace, because we have both sworn in the name of Yahweh, saying, 'Yahweh shall be between me and you, and between my seed and your seed, forever.'" He arose and departed; and Jonathan went into the city.
2 Samuel 21:7
But the king spared Mephibosheth, the son of Jonathan the son of Saul, because of Yahweh's oath that was between them, between David and Jonathan the son of Saul.
2 Samuel 9:1
David said, "Is there yet any who is left of the house of Saul, that I may show him kindness for Jonathan's sake?"
1 Samuel 20:12-17
Jonathan said to David, "Yahweh, the God of Israel, [be witness]: when I have sounded my father about this time tomorrow, [or] the third day, behold, if there be good toward David, shall I not then send to you, and disclose it to you?