The Trinitarian aspect of Christianity may be stated as:

 

The one true God exists as three distinct, transcendent, immanent, infinite, eternal, and immutable persons: God the Father, God the Son and God the Holy Spirit.

  • The one true God (Deut 4:35, 6:4; Isa 43:10, 44:6-8; I Cor 8:6; 1 Tim 2:5) exists as three distinct,
  • transcendent (1 Kings 8:27),
  • immanent (Acts 17:27,28; Col 1:16-17),
  • infinite (1 Kings 8:27),
  • eternal (Isa 57:15) and
  • immutable (Mal 3:6) persons:
    • God the Father (John 5:18, 10:29, 14:28, 17:1-3; 1 Cor 8:6; Phil 2:11),
    • God the Son (Isa 7:14, 44:6; John 1:1-14, 5:18, 10:30, 20:28, 8:58 cf Ex 3:14; Rom 9:5; Phil 2:5-11; Col 1:15-18; Titus 2:13, Heb 1:8; 1 John 5:20; Rev 22:13-18) and
    • God the Holy Spirit (Ex 17:7 cf Heb 3:7-9; Mat 28:19; Acts 5:3-4, 13:2 cf Gal 1:1 and 1 Tim 1:1; 1 Cor 3:16; 2 Cor 13:14; 2 Tim 3:16 cf 2 Pet 1:21; Heb 9:14).

Some have claimed the Holy Spirit is not a person. This claim is refuted by the following Scriptures: (John 14:26, 15:26, 16:7-11, 14; Acts 5:3, 13:2, 16:7; Rom 8:16, 26; 1 Cor 12:11; Eph 1:14, 4:30).

 

The Incarnation aspect of Christianity may be stated as:

 

Jesus Christ is God the Son. Jesus Christ is man. Jesus Christ is one person whose divine and human natures cannot be changed, divided, separated or mixed. Jesus Christ was resurrected bodily from the dead. Jesus Christ was born of a virgin.

  • Jesus Christ is God the Son (Isa 7:14 cf Mat 1:23, 44:6; John 1:1-14, 5:18, 10:30, 20:28, 8:58 cf Ex 3:14; Rom 9:5; Phil 2:5-11; Col 1:15-18; Titus 2:13, Heb 1:8; 1 John 5:20; Rev 22:13-18).
  • Jesus Christ is man (Mark 2:27,28; John 1:14; Rom 1:3; Phil 2:5-11; 1 Tim 2:5; 1 John 4:1-4).
  • Jesus Christ is one person whose divine and human natures cannot be changed, divided, separated or mixed (John 1:14; Rom 1:3,4, 8:3, 9:5; Gal 4:4,5; Phil 2:5-7; 1 Tim 3:16; Heb 2:11-14; 1 John 4:2,3).
  • Jesus Christ was resurrected bodily from the dead (Luke 24:36-47; John 2:19-21; Rom 8:11; 1 Cor 15:3-7; 1 John 3:2).
  • Jesus Christ was born of a virgin (Isa 7:14; Mat 1:23).

 

According to these Core Beliefs, the uncreated, one true God has existed eternally as three distinct, divine persons (God the Father, God the Son and God the Holy Spirit –- the Holy Trinity).  At the instant of the incarnation, God the Son became human as well as divine.

 

Christians have struggled with these great mysteries for 2000 years. (See Sections 1.3, 1.19, 1.23, 2.4, 2.5 and 12.12 of Theology Corner)

Yet early Christians expressed all this in a simple hymn which Ignatius included in his Epistle to the Ephesians:

 

Very Flesh, yet Spirit too;

Uncreated, and yet born;

God-and-Man in One agreed,

Very-Life-in-Death indeed,

Fruit of God and Mary’s seed;

At once impassible and torn

By pain and suffering here below; Jesus Christ

Whom as our Lord we know.

(Staniforth, p 77-78)