For these Levites, the four chief porters, were in their set
office
The four chief porters who were over all the two hundred and twelve, and had one over them, ( 1 Chronicles 9:17 ) , these were never changed, nor went into the country villages; but were always upon the spot, and in their office, superintending the rest:
and were over the chambers and treasuries of the house of God;
see ( 1 Chronicles 26:20 ) .