If any of you are struggling with the authenticity of Christ. Please know that his coming, his living and his dying fulfilled prophetic understandings of Him centuries before His being born to this earth. 3 ways to authenticate Christ: Fulfilled prophecy, Historical data, and Life testimony. That day riding into Jerusalem, Jesus fulfilled one of many prophecies regarding Him. It was by intent that Jesus entered Jerusalem that day riding on a donkey. His intent was to provoke His way to the cross.