In this episode we discuss one of proto-orthodoxy’s most formidable challenges: the rise of the Gnostics. We often hear the word “Gnosticism,” and we think we know what it refers to, but here we dive into the Gnostic worldview and explain why these teachers were worthy of so much apologetic ink...

In this installment of the First 500 Years series, the brothers take a journey through the life and thought of the church’s first major Heresiarch: Marcion of Pontus. Along the way, they propose fresh ways of understanding the origins of his doctrine and explain why he proved a formidable enemy...

Why did God become a man? We’re used to hearing what Christ’s incarnation/death/resurrection did for us, but we don’t often hear what His work did to the demonic powers. We’re used to answering the question solely with reference to matters of substitution, satisfaction, debts (of honor, wrath, or...