Luke in Acts uses the verb “catechesis” as instructing in the way of the Lord. In St Paul, it refers to oral instruction, a handing on of all that has been received from Christ.
Today this oral instruction may also be accompanied by written, printed or visual aids. Catechesis is based on Scripture, Tradition and liturgy, as well as on the teaching authority and life of the Church. Its purpose is to develop a living, explicit and active Faith through the liturgical and sacramental life of the Church. Catechesis is a lifelong process of conversion for the individual and the Christian community.