Christianity is one of the world's largest religions with over 2 billion followers worldwide. It is based on the teachings of Jesus Christ, who lived in Israel approximately 2000 years ago. Some of the core beliefs of Christianity include the Trinity of God as Father, Son, and Holy Spirit; the life, death, and resurrection of Jesus Christ; salvation through faith in Christ; and eternal life after death or judgment. Christianity was founded by Jesus and later established as a religion by his disciples and apostles through the spread of his teachings.