Theology of Jesus

According to Islamic scriptures, the belief that Jesus is God or Son of God is shirk, or the association of partners with God, and thereby a rejection of God's divine oneness (tawhid) and the sole unpardonable sin. All other sins may be forgiven through true repentance: shirk speaks of associating partners with God after having received the Divine Guidance, as it is said in the Qur'an and Hadith that when one submits to God (i.e. embraces Islam), their "accounts" (of sins and righteous deeds used to determine the standing of a person on the Last Day) are numbered from that moment. A verse from the Qur'an reads:

In blasphemy indeed are those that say that Allah is Christ the son of Mary. Say: "Who then hath the least power against Allah, if His will were to destroy Christ the son of Mary, his mother, and all every - one that is on the earth? For to Allah belongeth the dominion of the heavens and the earth, and all that is between. He createth what He pleaseth. For Allah hath power over all things."

””Qur'an sura 5 (Al-Ma'ida), ayah17

The Christian doctrine of the Trinity is similarly rejected in Islam. Such notions of the divinity of Jesus, Muslims state, resulted from human interpolations of God's revelation. Islam views Jesus as a human like all other prophets, who preached that salvation came through submission to God's will and worshiping God alone. Thus, Jesus is considered in Islam to have been a Muslim by the definition of the term (i.e., one who submits to God's will), as were all other prophets in Islam.

Other Links:

Jesus (A.S.) Rediscovered (part 1)  

Jesus (A.S.) Rediscovered (part 2)   

Jesus in Islam-part 1    

Birth of Jesus (A.S)    

Birth of the Soul of God