The doctrine of the Trinity is the most puzzling doctrine yet the central truth of the Christian faith. It unites all true believers and separates us from those who are anti-Christ, because if you deny this doctrine in your heart, you are not a Christian but an anti-Christ. Not only that man himself is tripartite in nature (spirit, soul and body), but even the entire universe is Trinitarian by design. The universe consists of three things: matter (mass, energy and motion), space (length, height and breadth), and time (past, present and future). Take away any one of those three and the universe would cease to exist, yet each one of those is itself a Trinity. The Father, the Son and the Spirit do not exist separately but together as One God.