Hinduism and other religions and medieval times. Islam is a strictly monotheistic religion in which the supreme deity is Allah ( : see God in Islam), the last Islamic prophet being Muhammad ibn Abdullah, whom Muslims believe delivered the Islamic scripture, the Qur'an. Hinduism mostly shares common terms with the other Indian religions, including Buddhism, Jainism and Sikhism. Islam shares common characteristics with Abrahamic religions–those religions claiming descent from the prophet Abraham–being, from oldest to youngest, Judaism, Christianity, Islam. The Qur'an is the primary Islamic scripture. Muslims believe it to be the verbatim, uncreated word of Allah. Second to this in religious authority, and
Christianity and Judaism their God, and that this God is unique and one. The quintessential physical expression of Judaism is behaving in accordance with the 613 Mitzvot (the commandments specified in the Torah), and thus live one's life in God's ways. Thus fundamentally in Judaism, one is enjoined to bring holiness into life (with the guidance of God's laws), rather than removing oneself from life to be holy. Much of Christianity also teaches that God wants people to perform good works, but all branches hold that good works alone will not lead to salvation, which is called Legalism, the exception being dual-covenant theology.