Mary as “without sin” is not a side issue—it’s a key that unlocks the whole Catholic imagination. If you’ve ever wondered why the Immaculate Conception matters, why Catholics speak of Mary as an advocate, or how prayer to saints fits with praying directly to God, this conversation connects the dots in a way skeptical listeners rarely hear. Jimmy unpacks the Immaculate Conception from the ground up: what the Church actually teaches, why Pope Pius IX defined it in 1854, and how a belief that lived in the faithful for centuries became dogma. He and his co-host trace the doctrine through Scripture, tradition, and what Jimmy calls the “puzzle” of systematic theology, showing how one piece of belief only makes sense when it’s attached to the rest.