Christianity is an Abrahamic monotheistic religion based on the life and teachings of Jesus Christ. It is the world's largest and most widespread religion with roughly 2.4 billion followers, comprising around 31.2% of the world population. Its adherents, known as Christians, are estimated to make up a majority of the population in 157 countries and territories. Christians believe that Jesus Christ is the Son of God, whose coming as the Messiah was prophesied in the Hebrew Bible and chronicled in the New Testament.

The term Abrahamic religion groups three of the major religions together due to their historical coexistence and competition; it refers to Abraham, a figure mentioned in the Hebrew Bible, the Christian Bible, and the Quran, and is used to show similarities between these religions and put them in contrast to Indian religions, Iranian religions, and the East Asian religions. Furthermore, some religions categorized as "Abrahamic" also share elements from other categories, such as Indian religions, or for example, Islam with Eastern religions.