The Abrahamic religions, also referred to as Abrahamism, are a group of monotheistic religions that claim to worship the God of Abraham, including Judaism, Christianity, Islam, and the Bahá'í Faith. The group is named after the prophet and patriarch Abraham, who is mentioned in the scriptures including the Quran, Tanakh, Bible, and Aqdas.
Jewish tradition claims Twelve Tribes of Israel descend from Abraham's son Isaac and grandson Jacob; Islamic tradition claims that twelve Arab tribes descend from Abraham's son Ishmael; Bahá'í tradition claims descend from Abraham's wife Keturah. After a century of archaeological investigation, no evidence has been found for these historical patriarchs. Most scholars believe the story of Abraham originated in the 6th century BCE, and that the Book of Genesis does not represent historical events.
Israelite religion derives from the Ancient Canaanite religion of the Bronze Age, and became monotheistic in the Iron Age, around 6th century BCE. It survives in two modern forms: Judaism and Samaritanism. Christianity split from Judaism in the 1st century CE, and spread widely after being adopted as the state religion by the Roman Empire in the 4th century. Islam was founded in the 7th century CE, and was soon spread by the Umayyad Empire. Bahá'í Faith was founded in the 19th century.
Today the Abrahamic religions are one of the largest major divisions in comparative religion (along with Indian, Iranian, and East Asian religions). Christianity, Islam, and Judaism are the Abrahamic religions with the greatest numbers of adherents. Abrahamic religions with fewer adherents include the Baháʼí Faith, Druzism (sometimes considered a school of Ismaili Islam), Samaritanism, and Rastafari.