It is true that Judaism does not affirm the doctrine of the Trinity, but this does not invalidate its truth for Christians. The doctrine of the Trinity is a theological conclusion based on the totality of Scripture, including the New Testament revelation. While the Hebrew Bible (Old Testament) emphasizes the oneness of God (Deut. 6:4), it also contains elements that hint at a complex unity in God's nature. In Genesis 1:26, God says, "Let us make man in our image," which implies a form of plurality within the divine nature. Throughout the Old Testament, the ‘Angel’ (messenger) of the Lord appears as distinct from God yet speaks and acts as God (Exod. 3:2-6; Judg. 13:21-22). Proverbs 8:22-31 describes Wisdom as a distinct person who was with God in the beginning, a passage often interpreted as prefiguring Christ. While these do not articulate the Trinity explicitly, they provide a framework that aligns with the later revelation of the Trinity in the New Testament. The full revelation of God’s triune nature came through Jesus Christ (John 1:1-18) and the outpouring of the Holy Spirit (John 14:26; Acts 2:1-4).
The Trinity was not “invented” by the Church but articulated in response to the revelation of Jesus Christ and the Holy Spirit. Early Christians, who were predominantly Jewish, struggled to reconcile Jesus' divinity with the strict monotheism they inherited. The doctrine of the Trinity emerged as the Church wrestled with the Scriptural data, seeking to remain faithful to both the Old and New Testament teachings about God. The Trinity is not a foreign addition to Scripture but a coherent explanation of how the Father, Son, and Holy Spirit are fully God while maintaining God's oneness. As Jesus declared in John 10:30, "I and the Father are one," demonstrating both distinction and unity.
Philo's writings indeed reflect Hellenized Jewish thought and describe the Logos as a divine intermediary, but they fall short of the Christian understanding of the Logos. The New Testament identifies the Logos as Jesus Christ (John 1:1, 14), who is not a mere intermediary or emanation but fully God and fully man. Philo's ideas show that the concept of divine plurality was not alien to Jewish thought, even if it was not fully developed in Judaism. The Christian understanding of Jesus as the Logos builds upon and surpasses these earlier ideas, showing a fuller revelation of God's nature as triune.
Jews historically expected a political deliverer who would restore Israel's national sovereignty. However, the Christian understanding of the Messiah as a spiritual Savior who redeems humanity from sin is deeply rooted in the Old Testament. The Suffering Servant is portrayed as one who bears the sins of many and is crushed for our iniquities—a role fulfilled by Jesus (Isaiah 53). Psalm 22 describes the suffering of the Messiah in terms strikingly similar to the crucifixion of Jesus. The "Son of Man" is given eternal dominion, a title Jesus frequently applied to Himself (Daniel 7:13-14). The divergence between Jewish and Christian views on the Messiah reflects differing interpretations of these texts, not an absence of Scriptural basis for the Christian perspective.
Christianity sees itself as the fulfillment of Jewish expectation, not a departure from it. The New Testament does not discard Jewish monotheism but expands it to include the fuller revelation of God through Christ and the Spirit. This is why early Christians, including Paul—a devout Jew—could affirm both the Shema ("The Lord our God, the Lord is one") and Jesus' divinity. Paul, for example, explicitly applies Old Testament passages about Yahweh to Jesus, such as Philippians 2:9-11, where he states that every knee will bow to Jesus, echoing Isaiah 45:23.
Jesus directly claimed divine authority, forgave sins (Mark 2:5-7), accepted worship (John 20:28), and equated Himself with the Father (John 10:30). These actions would have been blasphemous if Jesus were not truly God. The early Christians did not "make" Jesus God; they recognized Him as such based on His teachings, miracles, and resurrection.
The doctrine of the Trinity is indeed distinct from Jewish monotheism as understood today, but it is not contradictory to it. The Trinity is a deeper revelation of the same God who spoke through the Jewish Scriptures. It acknowledges the complexity and mystery of God's nature without abandoning the core monotheistic truth.