'Theirs' in the Bible

Now I have heard that {you have shearers}. Now while your shepherds [were] with us, we did not mistreat them, and nothing of theirs [was] missing, all the days they were in Carmel.

None of theirs [was] missing {from the smallest to the greatest}, even sons and daughters, from [the] plunder up to everything they had taken for themselves; David brought back everything.