"The “world” thus becomes the place and the means for the lay faithful to fulfill their Christian vocation, because the world itself is destined to glorify God the Father in Christ. The Council is able then to indicate the proper and special sense of the divine vocation which is directed to the lay faithful. They are not called to abandon the position that they have in the world. Baptism does not take them from the world at all, as the apostle Paul points out: “So, brethren, in whatever state each was called, there let him remain with God” (1 Cor 7:24). On the contrary, he entrusts a vocation to them that properly concerns their situation in the world. The lay faithful, in fact, “are called by God so that they, led by the spirit of the Gospel, might contribute to the sanctification of the world, as from within like leaven, by fulfilling their own particular duties. Thus, especially in this way of life, resplendent in faith, hope and charity they manifest Christ to others”(37).Thus for the lay faithful, to be present and active in the world is not only an anthropological and sociological reality, but in a specific way, a theological and ecclesiological reality as well. In fact, in their situation in the world God manifests his plan and communicates to them their particular vocation of “seeking the Kingdom of God by engaging in temporal affairs and by ordering them according to the plan of God”(38).
Precisely with this in mind the Synod Fathers said: “The secular character of the lay faithful is not therefore to be defined only in a sociological sense, but most especially in a theological sense. The term secular must be understood in light of the act of God the creator and redeemer, who has handed over the world to women and men, so that they may participate in the work of creation, free creation from the influence of sin and sanctify themselves in marriage or the celibate life, in a family, in a profession and in the various activities of society”(39).
The lay faithful’s position in the Church, then, comes to be fundamentally defined by their
newness in Christian life and distinguished by their
secular character(40).
The images taken from the gospel of salt, light and leaven, although indiscriminately applicable to all Jesus’ disciples, are specifically applied to the lay faithful. They are particularly meaningful images because they speak not only of the deep involvement and the full participation of the lay faithful in the affairs of the earth, the world and the human community, but also and above all, they tell of the radical newness and unique character of an involvement and participation which has as its purpose the spreading of the Gospel that brings salvation."
Pope St. John Paul II
vatican.va/holy_father/john_paul_ii/apost_exhortations/documents/hf_jp-ii_exh_30121988_christifideles-laici_en.html