1 Samuel 18:3
Then Jonathan and David made a covenant, because he loved him as his own soul.
1 Samuel 20:8-17
Therefore deal kindly with thy servant; for thou hast brought thy servant into a covenant of Jehovah with thee: but if there be in me iniquity, slay me thyself; for why shouldest thou bring me to thy father?
1 Samuel 20:42
And Jonathan said to David, Go in peace, forasmuch as we have sworn both of us in the name of Jehovah, saying, Jehovah shall be between me and thee, and between my seed and thy seed, for ever. And he arose and departed: and Jonathan went into the city.
1 Samuel 23:18
And they two made a covenant before Jehovah: and David abode in the wood, and Jonathan went to his house.
2 Samuel 9:1-3
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 Jehovah's oath that was between them, between David and Jonathan the son of Saul.