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John 17:3: “This is eternal life, that they may know You, the only true God, and Jesus Christ whom You have sent” (cf. John 4:24). The one true God has revealed Himself as three distinct persons, the Father and the Son, and the Son, and the Holy Spirit.
The Unbiblical Teachings of Oneness-Unitarian Theology
Oneness Christology is a clear and major departure from biblical orthodoxy. Similar to Islam, it teaches a unitarian/unipersonal (i.e., one person) concept of God. Hence, the chief Oneness Christological divergences from that of the biblical teachings are as follows:
1. Oneness Christology denies the unipersonality and deity of the Son. It teaches that “Jesus” is the name of the unipersonal deity. Accordingly, the “Son” merely represents the human nature of Jesus, while “Father/Holy Spirit” represents the divine nature of Jesus—thus, the Son is not God, only the Father is (cf. Bernard, Oneness of God, 1983: 99, 103, 252).
2. Along with the deity, Oneness Christology denies the preexistence and incarnation of the Son, and thus, His role as the Creator (cf. ibid., 103-4; Magee, Is Jesus in the Godhead or Is The Godhead in Jesus?, 1988: 25). By denying the preexistence of the person of the Son, Oneness doctrine rejects the incarnation of the divine Son holding to the erroneous notion that it was Jesus as the Father, not the Son, who came down and wrapped Himself in flesh, and that “flesh” was called “Son” (cf. Bernard, 106, 122).
In sharp contrast to Oneness Christology, Scripture presents clearly and definitely that the distinct person of the Son 1) is fully God (cf. Dan. 7:9-14; John 1:18; 5:17-18; Phil. 2:6-11; Heb. 1:3, 8, 10; 1 John 5:20; Rev. 1:8, 22:13), 2) was the Creator of all things (cf. John 1:3; Col. 1:16-17; Heb. 1: 2, 10-12), 3) eternally coexisted with and is distinct from the Father and the Holy Spirit (cf. Gen. 19:24; Dan 7:9-14; Matt. 28:19; John 17:5; 2 Cor. 13:14; 2 John 1:3; Rev. 5:13-14), and 4) became fully man in order “to give His life a ransom for many” (cf. John 1:1, 14; Mark 10:45; Phil. 2:6-11).
This is the Jesus of biblical revelation. Jesus Christ is the only mediator and intercessor between God the Father and human beings. Jesus is the divine Son, the monogenēs theos (“unique God”) who is always in the bosom of the Father (John 1:18), a personal self-aware subject, distinct from the Father and the Holy Spirit. In contrast to Oneness Christology, Jesus is not the Father, but “the Son of the Father” (2 John 1:3; cf. John 17:5ff.; 1 John 1:3).
Worshiping the unipersonal God of Oneness theology is not worshiping the true God in spirit nor truth. The Oneness concept of God is fundamentally the same as Islam and the Watchtower (Jehovah’s Witnesses): a unipersonal deity with no distinction of persons. The true God of biblical revelation is triune—the Father, and the Son, and the Holy Spirit.