|This is an opinion article from a user of WikiChristian.|
When studying true Islam, it is proper to study Islam as understood by Muhammad, the Qur'an, and his original followers. These sources greatly differ from modern Muslims in several ways.
View of the Bible
Main article: Apologetics: The Qur'an Teaches the Bible Is True (JBJ)
While modern Muslims believe the Torah, Psalms, and Gospel are corrupted from their original revelation, we find no such teaching in original Islam. Rather, Muhammad thought these books were true, did not contradict the Qur'an, and prophesied about himself. This belief changed when Muslims realized the Qur'an and Bible disagreed. WikiChristian articles use the following perspectives.
Divinity of Christ
Muslims do not hold the divinity of Jesus Christ and his unique salvific role, and the teachings of Islam in this respect have been likened to a compound heresy composed of elements of Arianism, Nestorianism, and Docetism, with some Pelagian and also Monarchianistic (i.e., anti-Trinitarian) elements.
Crucifixion and Resurrection
"...They did not kill him [Jesus] and they did not crucify him, but it was made to seem so to them..." Qur'an, 4:157
The Qur'an denies that Jesus was in fact crucified and then resurrected (cf. Docetism).
"Nay! Allah took him up to Himself; and Allah is Mighty, Wise." Qur'an 4:158
The Muslim belief is that Jesus was rescued by God prior to actually being crucified. This changed perhaps because it implied Jesus was greater than Muhammad: He defeated death.
Violence in Islam
Muhammad is said to have condoned conversion by force, the killing of civilians when useful, and violence as a means to give Muslims economic strength, but in reality, this wasn't always the case. Also, Islamic Shari'a law states that apostates must be executed (death penalty - حد الردة) if they insist on leaving Islam .
The False Gabriel
An angel did indeed speak to Muhammad, but he was not the Gabriel of the Bible as he claimed. Rather he was a fallen angel rebelling against God purposely deceiving Muhammad and Muslims.