Topical Studies for Isaiah 48:16:
Lord {Forerunner Commentary}
Lord {Nave's Topical Bible}
Secret {Forerunner Commentary}
Secret {Nave's Topical Bible}
Spirit {Forerunner Commentary}
Spirit {Nave's Topical Bible}
Time {Forerunner Commentary}
Time {Nave's Topical Bible}
Time {Torrey's Topical Textbook}
Jehovah {Forerunner Commentary}