Muslims believe that the concept of the Trinity is not found in the teachings of Jesus and contradicts the oneness of God.

The Didache, an early Christian document dated around 65-120 AD, explicitly instructs believers to baptize in the name of the Father, the Son, and the Holy Spirit, indicating an early acknowledgment of the Trinity. This practice reflects the teachings of Jesus, who commanded his disciples to make disciples of all nations and baptize them in this triune name (Matthew 28:19). Furthermore, early Christian writings consistently emphasize the divinity of Christ, asserting that he is the Son of God and integral to the Godhead. The Eucharistic prayers found in the Didache also highlight the role of Jesus in the salvation narrative, affirming his divine authority and presence in the life of the church. Thus, the early church's understanding of God was not a unitarian view but a complex unity that included the Father, Son, and Holy Spirit, which is foundational to Christian doctrine and distinct from Islamic teachings on God's nature.