"And Jesus answering, said to him: 'Blessed art thou, Simon Bar-Jona: because flesh and blood hath not revealed it to thee, but my Father who is in heaven. And I say to thee: That thou art Peter; and upon this rock I will build my church, and the gates of hell shall not prevail against it. And I will give to thee the keys of the kingdom of heaven. And whatsoever thou shalt bind upon earth, it shall be bound also in heaven: and whatsoever thou shalt loose upon earth, it shall be loosed also in heaven'" (Matthew 16:17-19).

"When he had said this, he breathed on them; and he said to them: 'Receive ye the Holy Ghost. Whose sins you shall forgive, they are forgiven them; and whose sins you shall retain, they are retained'" (John 20:22-23).

"Then Peter came to Jesus and asked, 'Lord, how many times shall I forgive my brother or sister who sins against me? Up to seven times?' Jesus answered, 'I tell you, not seven times, but seventy times seven'" (Matthew 18:21-22).