Mephibosheth

2 Samuel 4:4
And Jonathan son of Saul had a son who was lame in his feet. He was five years old when the report about Saul and Jonathan came from Jezreel. His nurse picked him up and fled, but as she was hurrying to escape, he fell and became lame. His name was Mephibosheth.

2 Samuel 9:10
You and your sons and servants are to work the ground for him and bring in the harvest, so that your master's grandson may have food to eat. But Mephibosheth, your master's grandson, is always to eat at my table." Now Ziba had fifteen sons and twenty servants.

2 Samuel 16:4
So the king said to Ziba, "All that belongs to Mephibosheth is now yours!" "I humbly bow before you, " said Ziba. "May I find favor in your eyes, my lord the king!"

2 Samuel 19:25
And he came from Jerusalem to meet the king, who asked him, "Mephibosheth, why did you not go with me?"

because

1 Samuel 18:3
Then Jonathan made a covenant with David because he loved him as himself.

1 Samuel 20:8, 15, 17, 42
Therefore deal faithfully with your servant, for you have brought me into a covenant with you before the LORD. If there is iniquity in me, then kill me yourself; why should you bring me to your father?" . . .

1 Samuel 23:18
So the two of them made a covenant before the LORD. And David remained in Horesh, while Jonathan went home.