Sacrosanctum Concilium §19

¹⁹ With zeal and patience, pastors of souls must promote the liturgical instruction of the faithful, and also their active participation in the liturgy both internally and externally, taking into account their age and condition, their way of life, and standard of religious culture. By so doing, pastors will be fulfilling one of the chief duties of a faithful dispenser of the mysteries of God; and in this matter they must lead their flock not only in word but also by example.