Topical Studies for Revelation 9:13:
Altar {Forerunner Commentary}
Altar {Nave's Topical Bible}
God {Forerunner Commentary}
God {Nave's Topical Bible}
God {Torrey's Topical Textbook}
Trumpet {Nave's Topical Bible}
Trumpet {Torrey's Topical Textbook}
Voice {Forerunner Commentary}
Voice {Nave's Topical Bible}
Horns {Forerunner Commentary}
Horns {Torrey's Topical Textbook}