That was why, in the Apostolic era and thereafter, during her early stages, the Church was extremely circumspect to safeguard the teaching and thus safeguard the faith. For this reason, St. Paul the Apostle says to his disciple St. Titus the Bishop of Crete: "But as for you, speak the things which are proper for sound doctrine" (Titus 2: 1). This sound doctrine was commanded to the first bishop fathers directly by the Apostles, and then from the bishops to other generations through honest teaching. Thus the sound doctrine was handed down from one generation to the next. St. Paul the Apostle says to his disciple Bishop Timothy: "And the things that you have heard from me among many witnesses, commit these to faithful men who will be able to teach others also" (2Tim.2: 2) and "Hold fast the pattern of sound words which you have heard from me, in faith" (2Tim.1: 13).