I Chronicles 9:22-34

All those chosen as gatekeepers were two hundred and twelve. They were recorded by their genealogy, in their villages. David and Samuel the seer had appointed them to their trusted office. So they and their children were in charge of the gates of the house of the LORD, the house of the tabernacle, by assignment. The gatekeepers were assigned to the four directions: the east, west, north, and south. And their brethren in their villages had to come with them from time to time for seven days. For in this trusted office were four chief gatekeepers; they were Levites. And they had charge over the chambers and treasuries of the house of God. And they lodged all around the house of God because they had the responsibility, and they were in charge of opening it every morning. Now some of them were in charge of the serving vessels, for they brought them in and took them out by count. Some of them were appointed over the furnishings and over all the implements of the sanctuary, and over the fine flour and the wine and the oil and the incense and the spices. And some of the sons of the priests made the ointment of the spices. Mattithiah of the Levites, the firstborn of Shallum the Korahite, had the trusted office over the things that were baked in the pans. And some of their brethren of the sons of the Kohathites were in charge of preparing the showbread for every Sabbath. These are the singers, heads of the fathers’ houses of the Levites, who lodged in the chambers, and were free from other duties; for they were employed in that work day and night. These heads of the fathers’ houses of the Levites were heads throughout their generations. They dwelt at Jerusalem.