Muslims and Christians both believe in one God, but they have different understandings of the nature of God and their respective religious teachings. Muslims worship Allah, who they believe is the one and only God, and their beliefs are outlined in the Quran. Christians, on the other hand, believe in the Holy Trinity—Father, Son (Jesus Christ), and Holy Spirit—and follow the teachings of the Bible. While there are similarities in the monotheistic belief in one God, the theological differences between Islam and Christianity are significant.