Topical Studies for Revelation 16:17:
Heaven {Forerunner Commentary}
Heaven {Nave's Topical Bible}
Heaven {Torrey's Topical Textbook}
Messenger {Forerunner Commentary}
Messenger {Nave's Topical Bible}
Sanctuary {Nave's Topical Bible}
Throne {Nave's Topical Bible}
Voice {Forerunner Commentary}
Voice {Nave's Topical Bible}