Christians believe in a complex God, three coeternal persons living a single enduring communion. The divine life has varied dimensions and allows human interaction with the triune God to take different forms. God’s channels are open on many frequencies. Christian belief in the Trinity originates in the conviction that only such a complex view of God can account for the relation with God that takes place in Christ, the incarnate Word—a relation that does not replace that of creature to creator, for instance, but adds to it. Only a complex God could take up this radical form of relation with us (becoming one of the creatures within God’s own creation) and offer this peculiar form for our relation with God (communion with God and others through Christ).