Islam began when God started universe creation.
Islam is an Arabic word that means submission and surrender to God. In this sense Islam began by the universe creation where all God creatures were created under their submission (Islam) to God. Upon start of mankind, they are taught through God prophets to be on full submission (Islam) to God. All prophet missions; including Noah, Abraham, Moses, Jesus, and Muhammad, was to hold submission (Islam) to the one and only one God, the Creator.
In this sense:
- Islam per God revelation of Torah to Moses is called Judaism.
- Islam per God revelation of the bible to Jesus is called Christianity.
- Islam per God revelation of Quran to Muhammad is called the very name Islam.
Islam religion per Quran revelation to prophet Muhammad began in year 610 AD by God revelation of first verses of Quran to prophet Muhammad through the angel Gabriel (Jibril).