1 Chronicles 9:22-34

All these who were chosen to be gatekeepers at the thresholds were 212. These were enrolled by genealogy in their villages, whom David and Samuel the seer appointed in their office of trust. So they and their sons had charge of the gates of the house of the LORD, even the house of the tent, as guards. The gatekeepers were on the four sides, to the east, west, north and south. Their relatives in their villages were to come in every seven days from time to time to be with them; for the four chief gatekeepers who were Levites, were in an office of trust, and were over the chambers and over the treasuries in the house of God. They spent the night around the house of God, because the watch was committed to them; and they were in charge of opening it morning by morning. Now some of them had charge of the utensils of service, for they counted them when they brought them in and when they took them out. Some of them also were appointed over the furniture and over all the utensils of the sanctuary and over the fine flour and the wine and the oil and the frankincense and the spices. Some of the sons of the priests prepared the mixing of the spices. Mattithiah, one of the Levites, who was the firstborn of Shallum the Korahite, had the responsibility over the things which were baked in pans. Some of their relatives of the sons of the Kohathites were over the showbread to prepare it every sabbath. Now these are the singers, heads of fathers’ households of the Levites, who lived in the chambers of the temple free from other service; for they were engaged in their work day and night. These were heads of fathers’ households of the Levites according to their generations, chief men, who lived in Jerusalem.