'Door keepers' in the Bible

And he gave the divisions of the priests their places for their work, as ordered by his father David, and to the Levites he gave their work of praise and waiting on the priests, to do what was needed day by day; and he gave the door-keepers their places in turn at every door; for so David, the man of God, had given orders.

And he put door-keepers at the doors of the Lord's house, to see that no one who was unclean in any way might come in

Had authority over the transport workers, giving directions to all who were doing any sort of work; and among the Levites there were scribes and overseers and door-keepers.

And the sons of Asaph, the makers of melody, were in their places, as ordered by David and Asaph and Heman and Jeduthun, the king's seer; and the door-keepers were stationed at every door: there was no need for them to go away from their places, for their brothers the Levites made ready for them.