The Religion of Islam is Not in the Quran
The Quranic concept of Islam (submission in English) is a meaning or a description rather than a name or a title. It is an abstract noun that describes the state of mind of anyone who recognizes God’s absolute authority, and reaches a conviction that God alone possesses all power; no other entity possesses any power or control independent of Him. The logical consequence of such a realization is to devote one’s life and one’s worship absolutely to God alone.
Submission (Islam in Arabic) is a spiritual state of mind and not a title of a religion that belongs to a specific group of people. Anyone who submits and worships one God without idolizing other entities is a submitter by definition.
This state of mind basically conforms with God’s one and only message He delivered to mankind through all of His messengers since Noah; worship God alone and avoid idolatry. Based on that, one can safely conclude that the message of Islam or submission has been in existence way before the time of Muhammad and way before Quran. All God’s messengers, since Noah, devoted their lives and worship to God alone and were Submitters to Him alone.
The assertion that Islam is a religion comes from the hadith literature. This literature, which has been written about 200 years after Muhammad, is the true foundation of the religion that we know as 'Islam'.
The Islamic religion is like all other religious cults. The Quran is not, as supposed, the foundation of the religion of Islam; were it fully removed, apart from the loss of the daily liturgy in which the traditionalist reminds God of some small part of what he gave men to live by, there would be no discernible difference to the religion as commonly understood.