Is Christianity a Greek myth?

No, Christianity is a religion that originated from Judaism.

Christianity is the general name of all sects that take Jesus Christ as their savior, also known as Christianity. Christianity generally believes that all its basic teachings come from the Bible. Christianity generally believes in the Trinity of God: Christianity, as a monotheistic religion, is characterized by the fact that the Christian God is a "Trinity" God, and the same God has three personalities: Father, Son and Holy Spirit. Gender of Christ: Christ is both a complete god and a complete man, with complete divinity and complete humanity. God's creation and man's image as God: The world was created by God, and God created man in his own image. Grace and good deeds: it is God's grace that people can restore their normal relationship with God. Revelation: Revelation is a gift from God, by which Christians know and believe in God. Sacraments: Protestantism generally only recognizes baptism and communion as sacraments.