Who were the first Christians according to the Bible?

The first Christians were not solely those who lived during the New Testament but include figures like Adam and Eve, who believed in the promised Messiah outlined in Genesis 3:15. This verse foretells the coming of Christ as the 'seed of the woman' who would ultimately crush the serpent's head. Throughout the Old Testament, figures such as Abraham and Noah exemplified faith in the coming salvation through Christ. They were assured of God's grace and promise, demonstrating that the true faith of Christianity has always centered around the work of Jesus Christ, established before time, not merely originating from the New Testament.