One in Faith, One in Love: The Council of Nicaea and the Trinitarian Life

In this sermon for the Sunday of the Holy Fathers of the First Ecumenical Council, Fr. Nicholas Frazer reflects on the Council of Nicaea and Christ's high priestly prayer in John 17. He draws together the Church's Nicene confession with the call to trinitarian prayer, worship, and unity — showing how truth and love, Orthodoxy and orthopraxy, belong inseparably together in the life of the Church.

Transcript

In the Name of the Father, and of the Son, and of the Holy Spirit.

Christ has ascended!

Between Ascension and Pentecost, we stand in a holy pause — a bridge of prayer and expectation. Today the Church sets before us the Fathers of the First Ecumenical Council: those 318 bishops at Nicaea who, under the guidance of the Holy Spirit, gave us the Creed that guards the Church's confession of the one God in three persons.

The Lord's high priestly prayer in John 17 shows us the heart of Christ's concern for his own. He prays for those given to him, for their unity, for their keeping in the Father's name, and for the completion of his joy in them.

Two truths shine clearly from this prayer. Christ's work is accomplished and yet continues. For he says, "I have glorified you on earth, having accomplished the work that you gave me to do" — and yet he prays for those who remain. The saving work is finished in him, and is carried forward in the life of the Church by the Spirit.

For when Jesus prays that "they may be one, even as we are one," he points us to a unity that is not merely organisational, but trinitarian — a unity of life, love, and mutual indwelling that the Spirit gives to the Church.

The Fathers of Nicaea met to answer a decisive question: who is this Jesus whom we worship? Arius denied the Son's true divinity. And so the Council confessed with clarity: "The Son is truly God, of one essence with the Father." The Nicene Creed is not an abstract formula. It is the Church's faithful articulation of the mystery we meet in worship and prayer.

This confession matters for our life of faith. If Christ were a creature, our worship would be misdirected. If he is God, then our Eucharist, our prayer, and our hope are anchored in the living God who became man, who suffered, who rose, and who ascended to the Father.

On this Sunday, we learn how to pray and how to worship. We pray to the Father, through the Son, in the Spirit. Jesus' prayer models the Church's prayer: directed to the Father, offered by the Son, empowered by the Spirit. Our liturgy and our private prayer follow this same movement.

We worship the Triune God together. Saying the Creed is not a recital of propositions only — it is an entry into the life of God who makes us one. The Creed gathers our voices and hearts into a single confession. The Fathers defended truth so that the Church might remain a faithful witness. Truth and love belong together: Orthodoxy and orthopraxy. The Creed guards the content of our worship; the Spirit forms the character of those who worship.

What are some practical applications?

Come to the Eucharist with renewed attention to the Creed. Hear the words as the living confession that shapes how we pray, speak of Christ, and live in this world.

Pray John 17 with intention. Let the Lord's prayer for his disciples shape your petitions — pray for unity, for protection in the Father's name, and for the joy of Christ to be fulfilled in others.

Defend the faith with humility and charity. Be ready to give a reason for your hope, but do so with gentleness and love, so that truth draws people into communion rather than drives them away.

And live the trinitarian life. Seek communion with God in prayer, repentance, and the mysteries. Seek communion with one another in forgiveness, service, and sacrificial love.

Beloved, the Ascension shows that our humanity has been taken into the life of God. Pentecost will show how that life is poured out into the world. Between these feasts, the Creed stands as our anchor — a short, sure summary of the mystery we worship.

Let us therefore pray as Christ prayed, confess as the Fathers confessed, and live as the Spirit forms us: one in faith, one in love, one in worship of the one God in three persons.

May the Father who glorified the Son keep you in his name. May the Son who prays for his own fill you with his joy. May the Holy Spirit, who proceeds from the Father, and who with the Father and the Son is worshipped and glorified, unite your hearts in truth and love.

Christ has ascended!