"For in him dwelleth all the fulness of the Godhead bodily." - Colossians 2:9
closed as unclear what you're asking by curiousdannii, Nigel J, 4castle, KorvinStarmast, bruised reed Aug 20 at 16:14
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I have heard of a denomination that believes only the four gospel accounts in the New Testament, but cannot find the source. I am unaware of any denomination that believes in only the New Testament. From an answer you posted previously you said:
Jesus revealed The Merciful Heavenly Father through His Teachings in the clearest way while The Old Testament did not, therefore we can go with sola scriptura when it comes to The Sayings of Jesus. Even then, sola fide must come first since a person must first believe that Jesus is The True Voice that reveals God The Father in order to trust His Teachings in The Gospel: "All things are delivered to me of my Father: and no man knoweth who the Son is, but the Father; and who the Father is, but the Son, and he to whom the Son will reveal him." (Luke 10:22) Source: What was first, sola scriptura or sola fide?
However, with regard to a denomination that believes only Christ is God, then I would suggest Oneness Pentecostals.
Oneness Pentecostals believe that there is but one God, a singular divine Spirit, who manifests himself as Father, Son, and Holy Spirit. This one indivisible God has no distinction of persons in God's eternal essence, and Jesus Christ is the manifestation, human personification, or incarnation of the one God. Source: https://en.wikipedia.org/wiki/Oneness_Pentecostalism
The United Pentecostal Church International, the largest Oneness Pentecostal denomination, says there is one God, who has revealed Himself as the Father, in His Son Jesus Christ, and as the Holy Spirit. Jesus Christ is God manifested in flesh. He is both God and man.
Oneness believers hold that God is absolutely and indivisibly one (Deuteronomy 6:4), and do not accept the idea of three distinct centers of consciousness in the Godhead. They also affirm that in Jesus dwells all the fullness of the Godhead bodily and that Jesus is the only name given for salvation (Colossians 2:9). The Father was revealed to the world in the name of Jesus, the Son was given the name of Jesus at birth, and the Holy Spirit comes to believers in the name of Jesus. Thus they believe the apostles correctly fulfilled Christ's command to baptize “in the name [singular] of the Father, and of the Son, and of the Holy Ghost” by baptizing all converts with the invocation of the name of Jesus (Matthew 28:19; Acts 2:38; 8:16; 10:48; 19:5; 22:16).
Oneness believers affirm that God has revealed Himself as Father (in parental relationship to humanity), in the Son (in human flesh), and as the Holy Spirit (in spiritual action). They acknowledge that the one God existed as Father, Word, and Holy Spirit before His incarnation as Jesus Christ, the Son of God; and that while Jesus walked on earth as God Himself incarnate, the Spirit of God continued to be omnipresent. Source: https://en.wikipedia.org/wiki/United_Pentecostal_Church_International#Godhead