What does 2 Samuel 19:37 mean?

'Please, let me go back home so I can die in my own town, near the graves of my parents. But here’s your servant Kimham—let him go with you, my king. Do for him whatever you think is right.' 2 Samuel 19:37 - Modern Text Bible

(Barzillai asks to return home to die near his family, but offers Kimham, likely his son or close relative, to receive David’s kindness instead.)