Topical Studies for 2 Chronicles 23:4:
Duty {Forerunner Commentary}
Duty {Nave's Topical Bible}
Levites {Forerunner Commentary}
Levites {Nave's Topical Bible}
On {Nave's Topical Bible}
Sabbath {Forerunner Commentary}
Sabbath {Nave's Topical Bible}
Priests {Torrey's Topical Textbook}