Topical Studies for Galatians 4:6:
Abba {Nave's Topical Bible}
Father {Nave's Topical Bible}
God {Forerunner Commentary}
God {Nave's Topical Bible}
God {Torrey's Topical Textbook}
Son {Nave's Topical Bible}
Spirit {Forerunner Commentary}
Spirit {Nave's Topical Bible}
Crying {Forerunner Commentary}