The Doctrine of the Trinity is affirmed by the Catholic Church and more in general by the large majority of Christian denominations, Orthodox, "mainline" Protestant etc., with some relevant exceptions (Jehovah's Witnesses, Biblical Unitarians, Christadelphians, etc.)
How is Jesus, resurrected and sitting on the right hand of the Father, related to the Trinity? Is he the same as God-the-Son? Does God-the-Son somehow "incorporate" the humanity of Jesus?