Catechesis · Inquirer
The Holy Trinity
Catechesis · Inquirer
The Holy Trinity
The central confession of Christianity is not a doctrine about God. It is a name: Father, Son, and Holy Spirit. God has made Himself known not as a force or a principle but as a c…
Question
Who is God?
The central confession of Christianity is not a doctrine about God. It is a name: Father, Son, and Holy Spirit. God has made Himself known not as a force or a principle but as a communion of Persons. This is the most fundamental thing the Church knows about God, and everything else follows from it.
The Trinity is not a problem to be solved. It is a mystery to be entered. The language the Church uses — one essence, three persons — is the minimum precision required to say what the Church has encountered without distorting it.
The teaching
Father, Son, and Holy Spirit — one God, three Persons
The Orthodox Church confesses one God in three Persons. The Father is the source — He begets the Son and sends forth the Spirit. The Son is eternally begotten of the Father. The Spirit eternally proceeds from the Father. All three are fully and equally God.
This is the God into whose name we are baptised. This is the God whose life we are invited to share. The doctrine of the Trinity is not a puzzle for theologians — it is the shape of the life we are called to enter.
God is love. This is not a predicate we attach to God. It is a description of His innermost being. And love requires a lover, a beloved, and the love between them.
The Trinity is the necessary consequence of taking seriously what John says: God is love. Love is not a solitary act. It is a relationship. If God is love in Himself — not merely because He loves creation — then God must be, in His own nature, a communion. The Trinity is what love looks like in God.
After St. John the Theologian
1 John 4:8 · interpreted in the tradition
Holy Scripture
"Go therefore and make disciples of all nations, baptising them in the name of the Father and of the Son and of the Holy Spirit."
Matthew 28:19
"The grace of the Lord Jesus Christ and the love of God and the fellowship of the Holy Spirit be with you all."
2 Corinthians 13:14
Perichoresis
The mutual indwelling at the heart of God
Perichoresis means mutual indwelling — each Person is fully in the others, without confusion or mixture. The Father is fully in the Son; the Son is fully in the Father; the Spirit is fully in both. This is not a metaphor. It is the most precise thing the Church can say about what God's inner life is like.