Topical Studies for 1 John 4:20:
Brother {Nave's Topical Bible}
God {Forerunner Commentary}
God {Nave's Topical Bible}
God {Torrey's Topical Textbook}
Love {Forerunner Commentary}
Love {Nave's Topical Bible}
If {Forerunner Commentary}
Liar {Forerunner Commentary}