How do we know Jesus' power over death is true?

The accounts of Jesus raising Jairus' daughter, the widow's son, and Lazarus provide concrete evidence of His power over death. Each narrative demonstrates that Jesus speaks with authority, and upon His command, life is restored immediately. These miracles affirm the truth of His divinity and the assurance that death does not have the final word. Additionally, the cornerstone of Christian faith is the resurrection of Jesus Himself, which not only serves as the ultimate victory over death but also guarantees that all who believe in Him will likewise be resurrected, confirming His promises and the reality of eternal life.