2 Chronicles 23:4

This is what you are to do: let a third of you, of the priests and Levites, who come in on the Sabbath, keep the doors

And their brothers, in the country places where they were living, were to come in every seven days to be with them from time to time.

And the Levites, all those of thirty years old and over, were numbered; and the number of them, by heads, man by man, was thirty-eight thousand.

And David, with Zadok of the sons of Eleazar, and Ahimelech of the sons of Ithamar, made distribution of them into their positions for their work.

And the families were taken by the decision of the Lord for every door; the small family had the same chance as the great.

Now it came about that in his turn he was acting as priest before God,

Treasury of Scripture Knowledge

This is the thing that ye shall do; A third part of you entering on the sabbath, of the priests and of the Levites, shall be porters of the doors;

And the Levites, all those of thirty years old and over, were numbered; and the number of them, by heads, man by man, was thirty-eight thousand.

And David, with Zadok of the sons of Eleazar, and Ahimelech of the sons of Ithamar, made distribution of them into their positions for their work.

Now it came about that in his turn he was acting as priest before God,

And the families were taken by the decision of the Lord for every door; the small family had the same chance as the great.