Christianity is a monotheistic religion [1] based on the life and teachings of Jesus of Nazareth.[2] Adherents of the Christian faith are known as Christians.[3] Christianity teaches Jesus is the Son of God,God having become human and the savior of humanity.Because of this,Christians commonly refer to Jesus as Christ or Messiah.[4] The three largest groups in the world of Christianity are the Roman Catholic Church,the Eastern Orthodox churches,and the various churches of Protestantism.As of the early 21st century,Christianity has around 2.2billion adherents.[ 基督教是一神论的宗教,建立在拿撒勒人耶稣的生活和教训基础上的.持有基督教信仰的人被称为基督徒.基督教信仰耶稣是上帝的儿子,是上帝取了人的样式来到世上并且成了人类的救赎主.因此,基督徒相信耶稣就是基督或弥赛亚.基督教的三大教派是天主教,本世纪初期,基督教信徒的人数已达到22亿.
