Ezekiel 44:5

The LORD said to me, “Son of man, pay careful attention, see with your eyes and hear with your ears all that I say to you concerning all the statutes of the house of the LORD and all its laws; and pay careful attention to the entering of the house [by people], with all the departures from the sanctuary [of people, those who are allowed to enter the temple and all those who are excluded from the sanctuary].