What’s so important about the doctrine of the Trinity? Is it really necessary for salvation? Can’t we know God without knowing anything about the Trinity? Through the witness of Scripture, we are confronted with the reality that the one true God is three persons: The Father, the Son, and the Holy Spirit. These three persons are one God. And salvation is dependent upon the true nature of God as three in one and one in three because each person acts for us in our salvation and if any one is not truly God, then salvation falls apart becoming dependent, not upon God alone, but upon creatures as well as God.
Image: Sir Harris Nicolas or hired artist working under Sir Harris Nicolas's direction, Public domain, via Wikimedia Commons