1 Samuel 20:15

And do not cut off your loyal love from {my family} forever, not [even] when Yahweh {exterminates} each of the enemies of David 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 sworn oath of Yahweh which [was] between them, between David and Jonathan the son of Saul.

1 Samuel 24:21

So then, swear to me by Yahweh that you will not cut off my {descendants} after me and that you will not wipe out my name from my father's house."

2 Samuel 9:1-7

Then David said, "[Is] there still anyone who [is] left for the house of Saul that I may show loyal love to him for the sake of Jonathan?"

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
So then, swear to me by Yahweh that you will not cut off my {descendants} after me and that you will not wipe out my name from my father's house."
2 Samuel 9:1
Then David said, "[Is] there still anyone who [is] left for the house of Saul that I may show loyal love to him for the sake of Jonathan?"
2 Samuel 21:7
But the king spared Mephibosheth the son of Jonathan, the son of Saul, because of the sworn oath of Yahweh which [was] between them, between David and Jonathan the son of Saul.

General references

1 Samuel 23:18
Then the two of them {made} a covenant before Yahweh. David remained at Horesh, and Jonathan went to his house.