Islam and Christianity differ most significantly in their beliefs about God, Jesus, salvation, and scripture. Christianity is a monotheistic religion centered on the Trinity (one God in three persons: the Father, the Son, and the Holy Spirit), while Islam is strictly monotheistic, believing in one God (Allah) in one person. Christians believe Jesus is the divine Son of God, while Muslims believe he was a human prophet. Salvation in Christianity is through God’s grace via faith in Jesus, whereas in Islam, it is achieved through submission to Allah’s will and good deeds.Â