What does 2 Samuel 15:20 mean?

You just got here yesterday. Should I make you wander with us when I don’t even know where I’m going? Go back and take your people with you. May God show you kindness and faithfulness.' 2 Samuel 15:20 - Modern Text Bible

(David is considerate, not wanting Ittai to suffer for his sake, and blesses him as he sends him away.)