The Trinity refers to the Christian doctrine that there is one God who eternally exists in three distinct persons: God the Father, God the Son (Jesus Christ), and God the Holy Spirit. These three persons are co-equal, co-eternal, and share the same essence or nature of God. Each person of the Trinity is fully God, yet there is only one God.

This concept is often described using the term “three in one” or “tri-unity.” It is not a belief in three separate gods or a belief in one God who merely manifests in different forms or modes. Rather, the Trinity is a unique understanding of the nature of God as revealed in the Bible.