Role of the Laity
The laity have a dominant role in the Church's mission to evangelize because they make up over 99% of the Church and they live out their lives in the mission field. The laity have a role to play inside the Church, but their primary job is to transform the world through the Gospel.
To intensify the apostolic activity of the people of God,(1) the most holy synod earnestly addresses itself to the laity, whose proper and indispensable role in the mission of the Church has already been dealt with in other documents.(2) The apostolate of the laity derives from their Christian vocation and the Church can never be without it. Sacred Scripture clearly shows how spontaneous and fruitful such activity was at the very beginning of the Church (cf. Acts 11:19-21; 18:26; Rom. 16:1-16; Phil. 4:3).
Decree on the Apostolate of the Laity, 1
Second Vatican Council