Question: Could Jesus sin? If not, was he truly human and free? (Iowa) Answer: This is a rather complex question that gets into some deep Trinitarian theology. But I think we can still break this down into some accessible takeaway points. For some background, we believe that Jesus is truly and fully God, the second Person of the Trinity, the “Word” who was “in the beginning with God” (Jn 1:1-2). We also believe that Jesus is, at the same time, truly and fully human; he is the Word which “became flesh and made his dwelling among us” (Jn 1:14). Jesus is one divine person with two inseparable natures. Incidentally, that is why we call Mary “the mother of God” –…