Such is the mystery of Christ, revealed and fulfilled in history according to the wisely ordered plan that St. Paul calls the "plan of the mystery" 2 and the patristic tradition will call the "economy of the Word incarnate" or the "economy of salvation."
Catechism number 1074
"The liturgy is the summit toward which the activity of the Church is
directed; it is also the font from which all her power flows."13
It is therefore the privileged place for catechizing the People of God.
"Catechesis is intrinsically linked with the whole of liturgical and
sacramental activity, for it is in the sacraments, especially in the Eucharist,
that Christ Jesus works in fullness for the transformation of
men."14