Teaching was the task of the Apostles and then of their disciples the bishops, priests and deacons. It was never the work of the laity. The Lord Jesus Christ entrusted the task of teaching to the Apostles when He said to them: "Go therefore and make disciples of all the nations, baptising them in the name of the Father and of the Son and of the Holy Spirit, teaching them to observe all things that I have commanded you" (Matt. 28:19,20) and "Go into all the world and preach the gospel to every creature" (Mark.16: 15). He did not say this to others.