Simon Peter answered and said, “You are the Christ, the Son of the living God."
Source, in full
As quoted in Gospel of Matthew 16:17-19, NKJV. Jesus answered and said to him, “Blessed are you, Simon Bar-Jonah, for flesh and blood has not revealed this to you, but My Father who is in heaven. And I also say to you that you are Peter, and on this rock I will build My church, and the gates of Hades shall not [a]prevail against it. And I will give you the keys of the kingdom of heaven, and whatever you bind on earth [b]will be bound in Heaven, and whatever you loose on earth will be loosed in Heaven.