About the origin of western vampires?

In the Middle Ages14th century in Europe, the church publicly admitted that vampires did exist. The origin of vampires first appeared in the Christian Bible. Its role is Cain. According to legend, Adam and Eve, the ancestors of mankind, were tempted by Satan, ate the fruit of wisdom, were cursed by God and were expelled from the Garden of Eden. Adam and Eve gave birth to Cain and Abel. Cain is in charge of farming and Abel is in charge of grazing. Once, when Cain offered sacrifices to God, he could only offer some vegetables and rice as sacrifices, while Abel offered lambs and other meat as sacrifices. God only favored Abel's sacrifice, which led Cain to be jealous and eventually stoned to death …