How do we know Jesus has the power to resurrect the dead?

Jesus' authority over life and death is clear in the accounts of His ministry, particularly in instances such as the resurrection of Jairus' daughter in Luke 8:54-55. When Jesus commanded the girl to arise, her spirit returned to her immediately. This act showcased His divine power and purpose to give life. The resurrection of Jesus Christ from the dead is the ultimate demonstration of His authority, where He effectively conquered death itself, thus validating all His claims and His capacity to resurrect both physically and spiritually.