en_tn_condensed/1ch/11/01.md

all Israel gathered together with David

This is a generalization that means people from every tribe in Israel came to David, but not every individual. Alternate translation: "people from throughout Israel came to be with David" or "people from every tribe in Israel came to be with David" (See: rc://en/ta/man/jit/figs-hyperbole)

we are your flesh and bone

This idiom means that they are relatives. Alternate translation: "we are your relatives" or "we have the same ancestors as you" (See: rc://en/ta/man/jit/figs-idiom)