The most familiar verse in all the Bible, John 3:16 is "For God so loved the world "that he gave His only Son." There's a real sense there in which we see God the Father sending God the Son. In John 17, in the great high priestly prayer of Jesus Christ, Jesus affirms to the Father that He had accomplished all the works that the Father had sent Him to do. And so we clearly see from the Bible that God the Father sent God the Son, or, to put it another way, God appointed God. How is that possible? Well, God the Father carries out a slightly different role in some ways than God the Son, and God the Spirit carries out different roles than God the Son and God the Father, and yet, they are fully God, and this is where we run up against the eternal difficulty of the Trinity. We can't fully fathom the Trinity, that God the Father is God, God is Son is God, God the Spirit is God, and yet, they are three persons.