Muslims believe that the concept of God in Christianity is inconsistent with monotheism, as it introduces the idea of a triune God.

The Dead Sea Scrolls, particularly the Melchizedek Scroll, provide insights into the early Jewish understanding of God's nature and the concept of divine plurality. The scrolls reference God in a way that suggests a complex unity, which aligns with the Christian understanding of the Trinity. Furthermore, passages such as John 1:1 affirm the divinity of Christ, indicating that the Word (Logos) was both with God and was God, suggesting a unity that does not negate monotheism but rather fulfills it. The early Christian community, drawing from Jewish texts, understood this plurality within the oneness of God, as seen in the teachings of Jesus and the apostles. Therefore, the belief in a triune God does not violate the principle of monotheism but rather reflects a deeper theological truth about God's nature as revealed in both the Old and New Testaments.