2 Samuel 9:10-11

10You and your sons and your servants shall cultivate the land for him, and you shall bring in the produce, so that your master’s grandson may have food to eat; but Mephibosheth, your master’s grandson, shall always eat at my table.” Now Ziba had fifteen sons and twenty servants.

11Then Ziba said to the king, “Your servant will do according to everything that my lord the king commands.” So Mephibosheth ate at David’s table as one of the king’s sons.