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There are three persons in the one true and living God: the Father, the Son, and the Holy Spirit. They are the same in substance, equal in power and glory.
There are three persons in one God: the Father, the Son, and the Holy Spirit.
The grace of the Lord Jesus Christ and the love of God and the fellowship of the Holy Spirit be with you all.
The great mystery of the Blessed Trinity, Father, Son, and Holy Ghost, being one God, is made necessary to us to be believed, not only as to the eternal unsearchable Inexistence, but especially for the knowledge of God’s three great sorts of works on man: that is, as our Creator, and the God of nature; as our Redeemer, and the God of governing and reconciling grace; and as our Sanctifier, and the Applier and Perfecter of all to fit us to glory. . . .
God is one infinite, undivided Spirit; and yet that he is Father, Son, and Holy Ghost, must be believed. . . .
How is it to be proved that the Holy Ghost is God? We are to be baptized into the belief of him as of the Father and the Son, and in that he doth the works proper to God, and hath the attributes of God in Scripture.
The doctrine of the Trinity is the most important Christian doctrine that most people never think about. It’s absolutely essential to our faith, and yet for many Christians it just seems like a very confusing math problem. And even if we can figure out what Trinity means, it doesn’t feel like it has much bearing on our lives, much relevance to us.
The word Trinity, famously, is not found in the Bible, but the word does very well at capturing a number of biblical truths. There are actually seven statements that go into the doctrine of the Trinity:
1. God is one. There’s only one God.
2. The Father is God.
3. The Son is God.
4. The Holy Spirit is God.
5. The Father is not the Son.
6. The Son is not the Spirit.
7. The Spirit is not the Father.
If you get those seven statements, then you’ve captured the doctrine of the Trinity—what it means when we say there is one God and three persons.
Christians are monotheists. We don’t believe in many gods or a pantheon of gods but just one God, and this God expresses himself and exists as three persons. That language of persons is very important. The early church wrestled with the appropriate language, and persons aptly speaks to the personality of the three members of the Trinity and also their relationship with each other; the Father, Son, and Holy Spirit coinhere as one essence, and yet there are distinctions. One is not the other, but they’re equal in rank, equal in power, equal in glory, equal in majesty. Just as Jesus sends out the disciples to go baptize in the name of the Father, and of the Son, and of the Holy Spirit, we see this doctrine of the Holy Trinity woven throughout the Scriptures.
Even more confusing to people is the question “Why does this even matter? Okay, I understand I got three in one, one in three. What difference does this make for anything in my Christian life?” In good Trinitarian fashion, I think there are three important things that the doctrine means for us.
First, the Trinity helps us to understand how there can be unity in diversity. This is one of the most pressing questions in our world. Some folks focus almost exclusively on diversity, on the fact that people are so different. They don’t see any common ground. Others want to press for complete uniformity in thought, in government, and in expression. The Trinity shows us that you can have a profound, real, organic unity with diversity, so that the Father, Son, and Holy Spirit are working in complete union in our salvation. The Father appoints. The Son accomplished. The Spirit applies. We encounter God as fully God in the Father, in the Son, and in the Holy Spirit. And yet, their divine work is neither interchangeable nor redundant.
Second, when you have a triune God, you have the eternality of love. Love has existed from all time. If you have a god who is not three persons, he has to create a being to love, to be an expression of his love. But Father, Son, and Holy Spirit existing in eternity have always had this relationship of love. So love is not a created thing. God didn’t have to go outside of himself to love. Love is eternal. And when you have a triune God, you have fully this God who is love.
Finally, and most importantly, the doctrine of the Trinity is crucial for the Christian because there is nothing more important in all the world than knowing God. If God exists as one God in three persons, if the one divine essence subsists as Father, Son, and Holy Spirit, if we are baptized into this triune name, then no Christian should want to be ignorant of these Trinitarian realities. In the end, the Trinity matters because God matters.
Father, Son, and Spirit, you are beyond our understanding. Thank you for bringing us into your love, a love that existed before the world in your three perfect persons. Amen.