What is the Trinity? Father, Son, Holy Spirit. But, how do these three persons exist as one Triune God? That question is not so easy to answer; in fact, it is a question that no person, no matter how Biblically educated, can truly answer. And, because understanding the Triune nature of God is an essential part of our faith, we are going to spend some time this week discussing the Trinity. Basically, after we discussed the very basic question of why Christians believe in God last week; the logical next step for us to take is to discuss why Christians believe that God is Triune, and what that means.