The idea of the Trinity - that God the Father, Jesus the Son, and the Holy Spirit are different from each other and are all God, but there is only ONE God, is a central tenant of Christianity. But most Christians don't actually know what the doctrine really says, let alone where it came from (is it in the Bible?). In this episode we explain the factors that led to the formulation of the doctrine and see why it became so important to Christian thinking. But does it matter that the math doesn't work? (The three are one!) Or that it can doesn't make logical sense?