Heresy is not a victimless crime. Theology matters!
On the basis of Scripture itself, Christians throughout the centuries have professed belief in the Holy Trinity, affirming the fact that our one God is eternally existent in three Persons: the Father, the Son and the Holy Spirit, who are co-equal, co-existent and co-eternal. This is because the following three things are very clearly taught in Scripture:
(1) There is only one God, who is eternal and immutable (unchanging). (Deut. 6:4; Isa. 43:10; Mal. 3:6; Mark 12:29; John 17:3; 1 Tim. 2:5; Jam. 2:19)
(2) There are three eternal Persons – the Father, the Son, and the Holy Spirit. These Persons are never identified with one another – that is, they are carefully differentiated as distinct Persons. The Father is not the Son, nor the Son the Holy Spirit, and nor is the Holy Spirit the Father. (Matt: 3:13-17; 28:19; Luke 10:22; John 1:1, 2; 3:16, 17; 15:26; 16:7; 17:1-26; 2 Cor. 13:14)
(3) The Father, the Son, and the Spirit, are identified as being full Deity – that is, the Bible teaches the Deity of the Father, the Deity of Christ and the Deity of the Holy Spirit. (Isa. 9:6; John 17:3; John 1:1, 18; 8:58; 20:28; Phil. 2:5-11; Col. 2:9; Titus 2:13; Heb 1:8; 2 Pet. 1:1; Acts 5:3, 4; 2 Cor. 3:17, 18)
Every new generation of Christians must contend for the faith once and for all delivered to the saints (Jude: 4). In this video below, Dr. James White, author of the book “The Forgotten Trinity,” teaches a session on this same theme, at a time when there is widescale apathy concerning defending this essential and vital doctrine.