The earliest mention of the resurrection of Christ outside of the Bible can be found in the writings of the first-century Jewish historian Flavius Josephus. In his work "Antiquities of the Jews," Josephus briefly mentions the crucifixion of Jesus and reports that some of Jesus' followers believed he had appeared to them after his death.
Another early source mentioning the resurrection of Christ is the writings of the first-century Christian historian and theologian Tacitus. In his work "Annals," Tacitus briefly mentions the execution of Jesus at the hands of Pontius Pilate and reports that Jesus' followers believed he had risen from the dead.
Additionally, the writings of the second-century Christian apologists such as Justin Martyr, Tertullian, and Origen also contain references to the resurrection of Christ and its importance in the Christian faith. These early writings provide valuable insights into the early Christian belief in the resurrection of Christ.
