Topical Studies for Jeremiah 31:20:
Ephraim {Forerunner Commentary}
Ephraim {Nave's Topical Bible}
Heart {Forerunner Commentary}
Heart {Nave's Topical Bible}
Mercy {Forerunner Commentary}
Mercy {Nave's Topical Bible}
Mercy {Torrey's Topical Textbook}
Will {Forerunner Commentary}
Will {Nave's Topical Bible}
Jehovah {Forerunner Commentary}