God exists as three persons, yet he is one being. Each person—the Father, the Son, and the Holy Spirit—has a separate identity while enjoying the same essence of nature as the others, not merely similar natures in different roles. Some might think this is contradictory. It would be contradictory if the doctrine of the Trinity claimed one God and three Gods at the same time. But the Trinity is one God who eternally co-exists as three persons. God is, was, and always will be. The Father, Son, and Holy Spirit as three distinct persons share this one substance and essence of being God.