2 Samuel 9:1-3

And David said, “Is there still anyone left of the house (family) of Saul to whom I may show kindness for Jonathan’s sake?” There was a servant of the house of Saul whose name was Ziba, so they called him to David. And the king said to him, “Are you Ziba?” He said, “I am your servant.” And the king said, “Is there no longer anyone left of the house (family) of Saul to whom I may show the goodness and graciousness of God?” Ziba replied to the king, “There is still a son of Jonathan, [one] whose feet are crippled.” [1 Sam 20:14-17]