Gospel of Saint John Chapter 6 verses 66 through 70
66 And he said: Therefore did I say to you, that no man can come to me, unless it be given him by my Father. 67 After this many of his disciples went back; and walked no more with him. 68 Then Jesus said to the twelve: Will you also go away? 69 And Simon Peter answered him: Lord, to whom shall we go? thou hast the words of eternal life. 70 And we have believed and have known, that thou art the Christ, the Son of God.