chamber: The word chamber probably here denotes a row of chambers, of which there seems to have been three. One for the singers; one for the priests who in their courses took charge of the sacred vessels and treasures; and one for the priests who attended on the altar and sacrifices.
whose: Eze 8:5
the keepers: Lev 8:35; Num 3:27-28, Num 3:32, Num 3:38, Num 18:5; 1Ch 6:49, 1Ch 9:23; 2Ch 13:11; Psa 134:1; Mal 2:4-7; 1Ti 6:20; Rev 1:6