2 Samuel 9:3

“You shall not cut off your lovingkindness from my house forever, not even when Yahweh cuts off every one of the enemies of David from the face of the earth.”

Now Jonathan, Saul’s son, had a son crippled in his feet. He was five years old when the report of Saul and Jonathan came from Jezreel, and his nurse took him up and fled. And it happened that in her hurry to flee, he fell and became lame. And his name was Mephibosheth.

And David said to him, “Do not fear, for I will surely show lovingkindness to you for the sake of your father Jonathan, and will restore to you all the land of your grandfather Saul; and you shall eat at my table continually.”

So Mephibosheth lived in Jerusalem, for he ate at the king’s table continually. Now he was lame in both feet.

Now David had passed a little beyond the summit, and behold, Ziba the young man of Mephibosheth met him with a couple of saddled donkeys, and on them were two hundred loaves of bread, one hundred clusters of raisins, one hundred summer fruits, and a jug of wine.

So he answered, “O my lord, the king, my servant deceived me; for your servant said, ‘I will saddle a donkey for myself that I may ride on it and go with the king,’ because your servant is lame.

But the king spared Mephibosheth, the son of Jonathan the son of Saul, because of the oath of Yahweh which was between them, between David and Saul’s son Jonathan.