The Quran states that Muslims, Jews and Christians worship the same God. However, when compared with the Jewish and Christian scriptures, the teachings of Quran show that Allah is not the same God worshipped by Jews and Christians.
When someone tells you, "God is bigger than doctrine," it is a good indicator that they are about to assert something that contradicts His truth.
Is the God of the Old Testament nothing but a bully, a murderer, and an oppressor?
Not all doctrines necessary for salvation are necessary for a person to believe in order to be saved.
What is the Gospel -- the Good News of revealed in the Bible?
Research resources on The Bible. Is the Bible inspired by God? What's up with all those different Bible versions? What is the best way to study the Bible?
Similarities and differences between the God of the Quran and the God of the Bible
Research resources on the essential doctrines of the Christian faith, and on the importance of doctrine in Christianity
Chart listing essential doctrines of the Christian faith
Essential doctrines of the Christian faith: orthodoxy vs. heresy