Trinity
The Trinity teaches that the one true God eternally exists as Father, Son, and Holy Spirit.
Formal Definition
God is one in essence and eternally three in persons: Father, Son, and Holy Spirit, equal in deity, glory, and worth.
Key Scriptures
Deuteronomy 6:4
Matthew 28:19
John 1:1–3
2 Corinthians 13:14
Matthew 28:19
John 1:1–3
2 Corinthians 13:14
Explanation
The doctrine of the Trinity holds together everything Scripture affirms: there is one God, the Father is God, the Son is God, and the Holy Spirit is God, yet the Father is not the Son, and the Son is not the Spirit. The church did not invent the Trinity; it named the pattern revealed in Scripture.
The Trinity matters because salvation, prayer, worship, and mission all unfold from the life of the triune God. We are brought to the Father, through the Son, by the Spirit.
Scripture Index
Unity of God: Deuteronomy 6:4; Isaiah 45:5
Father, Son, Spirit: Matthew 3:16–17; Matthew 28:19; John 14–16
Divinity of the Son and Spirit: John 1:1; Acts 5:3–4
Father, Son, Spirit: Matthew 3:16–17; Matthew 28:19; John 14–16
Divinity of the Son and Spirit: John 1:1; Acts 5:3–4
Subtopics
Unity of God
Distinction of persons
Divinity of the Son
Divinity of the Spirit
Distinction of persons
Divinity of the Son
Divinity of the Spirit
Application / Why It Matters
The Trinity shapes worship and discipleship. Christian faith is not vague monotheism but covenant life with the Father, through the Son, in the Holy Spirit.
Historical / Church Reflection
Nicene Christianity defended the full deity of the Son and Spirit against reductions that treated them as lesser beings or created powers.
Viewpoints / Debates
Debates usually concern terminology, philosophical explanation, or later discussions about the relations of the persons, not whether Scripture reveals one God in three persons.