seven
2 Kings 11:5
And he commanded them, saying, This is the thing that ye shall do; A third part of you that enter in on the sabbath shall even be keepers of the watch of the king's house;
2 Kings 11:7
And two parts of all you that go forth on the sabbath, even they shall keep the watch of the house of the LORD about the king.
2 Chronicles 23:8
So the Levites and all Judah did according to all things that Jehoiada the priest had commanded, and took every man his men that were to come in on the sabbath, with them that were to go out on the sabbath: for Jehoiada the priest dismissed not the courses.