The Sinless Life of Jesus Christ, Papal Infallibility, and Sainthood

Hebrews 4:15   For we have not an high priest which cannot be touched with the feeling of our infirmities; but was in all points tempted like as we are, yet without sin.

2 Corinthians 5:21  For he hath made him to be sin for us, who knew no sin; that we might be made the righteousness of God in him.

Isaiah 53:9  And he made his grave with the wicked, and with the rich in his death; because he had done no violence, neither was any deceit in his mouth.

Papal infallibility states that, in virtue of the promise of Jesus to Peter, the Pope is preserved from the possibility of error "When, in the exercise of his office as shepherd and teacher of all Christians, in virtue of his supreme apostolic authority, he defines a doctrine concerning faith or morals to be held by the whole Church."  This doctrine was defined in the First Vatican Council of 1869–1870, but had been defended before that.   Concepts in understanding infallible, divine revelation: Sacred Scripture, Sacred Tradition, and the Sacred Magisterium. The infallible teachings of the Pope are part of the Sacred Magisterium, which also consists of ecumenical councils and the "...ordinary and universal magisterium."   In Catholic theology, papal infallibility is one of the channels of the infallibility of the Church. The infallible teachings of the Pope must be based on, or at least not contradict, Sacred Tradition or Sacred Scripture.

Canonization of a Saint is the act by which the Catholic Church declares a deceased person to be a saint, upon which declaration the person is included in the canon, or list, of recognized saints. Originally, individuals were recognized as saints without any formal process. Later, different processes were developed.  The first people honored as saints were the martyrs.