1 Samuel 20:15

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.

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.

1 Samuel 24:21

Swear now therefore unto me by the LORD, that you will not cut off my descendants after me, and that you will not destroy my name out of my father's house.

2 Samuel 9:1-7

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?

Treasury of Scripture Knowledge

Summary

But also thou shalt not cut off thy kindness from my house for ever: no, not when the LORD hath cut off the enemies of David every one from the face of the earth.

General references

Bible References

Thou shalt

1 Samuel 24:21
Swear now therefore unto me by the LORD, that you will not cut off my descendants after me, and that you will not destroy my name out of my father's house.
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.

General references

1 Samuel 23:18
And they both made a covenant before the LORD: and David abode in the forest, and Jonathan went to his house.