How do we know that Jesus's resurrection was true?

The resurrection of Jesus is substantiated by numerous eyewitness accounts, as recorded in the Gospels, including the interactions He had with His disciples shortly after rising from the dead. The profound transformation in the lives of His followers—who moved from fear and despair to bold proclamation—also serves as evidence of the resurrection's authenticity. This event is foundational to the gospel message, affirming Christ's victory over sin and death, which is central to the salvation offered to all believers. As Paul emphasizes in 1 Corinthians 15, the validity of the resurrection is crucial to the Christian faith; without it, our preaching and faith are in vain.