Topical Studies for Ecclesiastes 8:16:
Day {Forerunner Commentary}
Day {Nave's Topical Bible}
Day {Torrey's Topical Textbook}
Night {Nave's Topical Bible}
Night {Torrey's Topical Textbook}
Wisdom {Forerunner Commentary}
Wisdom {Nave's Topical Bible}
Know {Forerunner Commentary}
Mind {Forerunner Commentary}
Effort {Forerunner Commentary}