Binitarianism claims God is only the Father and the Son, collapsing the Holy Spirit into Jesus instead of recognizing Him as a distinct divine Person. The Spirit is fully God, personally distinct, and essential to the true gospel—making Binitarianism a serious distortion of who God is.
Binitarianism, in contrast to Trinitarianism, teaches that God exists as only two Persons—the Father and the Son, with the Holy Spirit being Jesus. This view often misuses Romans 8:9 and appeals to The Shepherd of Hermas, a second-century work that the church never accepted as Scripture and which contains multiple theological errors. Romans 8:9 calls the Spirit “the Spirit of God” and “the Spirit of Christ,” but this describes His ministry, not His identity. The Holy Spirit is called the “Spirit of Christ” because Jesus promised to send Him, He testifies about Christ, and He applies Christ’s work to believers (John 14:26; 15:26; Ephesians 1:13).
Scripture consistently presents the Holy Spirit as a distinct divine Person. In the Old Testament, the Holy Spirit was active in believers’ lives, but the main difference between His presence in the Old Testament is that He infilled rather than permanently indwelled God’s people (Exodus 31:2-5; 1 Samuel 10:10, 16:14). Jesus speaks of the Spirit as “another Helper” whom He will send from the Father (John 14:16; 15:26). The Spirit teaches, guides, convicts, speaks, and wills—actions of a personal agent, not an impersonal force (John 16:13; Acts 13:2; 1 Corinthians 12:11). He can be lied to (Acts 5:3), grieved (Ephesians 4:30), and directs the church’s mission (Acts 13:2–4). These passages show that the Spirit is fully God and personally distinct from the Father and the Son.
Identity theft can uproot your life and destroy your finances for years to come. An even greater form of “identity theft” is Binitarianism as it “steals” from God’s identity by teaching that the Holy Spirit is not distinct and divine. And the results are even more severe than some stolen credit cards. Our view of God has eternal consequences. Scripture warns us that anyone who changes the identity of God or Jesus is presenting a different God and a different Jesus—one who cannot save. If the Spirit is not the divine Person Scripture reveals, then Jesus lied when He said He was sending another Helper, which calls His character into question. Additionally, Jesus remains fully human and is currently in heaven interceding for us (Romans 8:34; Hebrews 7:25) while the Spirit is here, applying Christ’s work, giving new life, and sealing believers until the day of redemption.
This is why Christians must test every teaching by Scripture (Acts 17:11). God has spoken clearly about His nature, His Son, and His Spirit, and He calls us to measure every message and every teacher against His Word (1 Thessalonians 5:21). When a teaching contradicts Scripture, no matter how persuasive it sounds or how old a supporting document is, we must reject it. Holding fast to what God has revealed in His word protects us from error and keeps us anchored to the true gospel—the good news of the Father who saves through His Son and the Spirit who brings that salvation to our hearts.