The apostolic activity of the people of God

The whole Church must work vigorously in order that men may become capable of rectifying the distortion of the temporal order and directing it to God through Christ. Pastors must clearly state the principles concerning the purpose of creation and the use of temporal things and must offer the moral and spiritual aids by which the temporal order may be renewed in Christ.

The laity must take up the renewal of the temporal order as their own special obligation. Led by the light of the Gospel and the mind of the Church and motivated by Christian charity, they must act directly and in a definite way in the temporal sphere. As citizens they must cooperate with other citizens with their own particular skill and on their own responsibility. Everywhere and in all things they must seek the justice of God’s kingdom. The temporal order must be renewed in such a way that, without detriment to its own proper laws, it may be brought into conformity with the higher principles of the Christian life and adapted to the shifting circumstances of time, place, and peoples. Preeminent among the works of this type of apostolate is that of Christian social action which the sacred synod desires to see extended to the whole temporal sphere, including culture. – from Apostolicam Actuositatem, 1965