“God is One - What Christians, Muslims and Jews need to Understand about Christianity and the Trinity,” was written after the author had been accused by Muslims and Jews of being a polytheist. The author spent two years researching the doctrine of Trinitarianism in order to be able to teach the Trinity directly from the scriptures. That study resulted in the author’s first book, “Understanding the Trinity from the Scriptures – It’s all about God’s Love for You.” The sequel to that book, “God is One,” is geared specifically to answer Muslim and Jewish objections to a doctrine that to them is polytheism and idolatry. The author recognized that the misunderstandings that have arisen regarding the Trinity, are the result of the wording of the definition that is used to describe the tri-unity of God, the Holy Spirit and Jesus. When Christians say, “God eternally exists as three persons: God the Father, God the Son and God the Holy Spirit,” to the Jewish and Muslims minds they think we are saying that God the Father is plural. Any Trinitarian theologian and Bible scholar will tell us that there is no plurality in God the Father, God is one. “God is One – What Christians, Muslims and Jews need to understand about Christianity and the Trinity,” explains the concept of the Trinity directly from the scriptures and how the Trinity is also revealed in the Quran and the Tanakh. The Muslim concept of “Taweed” which adamantly affirms the oneness of God the Father is affirmed, and at the same time, the unity of God with the Holy Spirit and Jesus is explained using the Tanakh and references from the Quran. This book also explores the origin of Christianity in the Old Testament, and its relationship to the faith of Abraham. In addition, we are also shown why Muslims reject the doctrine of original sin and explains why the worship of Jesus is not "shirk." Using references from the Quran and the Tanakh, "God is One," also effectively answers Muslim and Jewish objections to the atonemnt and Jesus' divinity.