Definition: Apostatical is a term from the Bible that means someone who does not adhere to traditional Christian teachings or beliefs, often as a result of sin or rebellion against God's will. It can refer to the apostles of Jesus Christ, who were often zealous advocates for Christ and his teachings, but also those who rejected the traditions and practices of their faith. The word is derived from the Greek word apΓ³sthΔs (a) meaning "beloved" and the suffix "-atic", which means "from".