David receives support east of the Jordan
David came to Mahanaim in Gilead. He received support and provisions from Shobi, Machir and Barzillai.
Key passages
2 Sa 17:27–29

Just as David had arrived in Mahanaim, Shobi the son of Nahash from Rabbah of the Ammonites and Makir the son of Ammiel from Lo Debar and Barzillai the Gileadite from Rogelim brought beds and basins and objects of pottery, as well as wheat, barley, flour, roasted grain, beans, lentils, …

See also
2 Sa 19:32; 1 Ki 2:7;