CCC 905
Lay people also fulfill their prophetic mission by evangelization, "that is, the proclamation of Christ by word and the testimony of life." For lay people, "this evangelization . . . acquires a specific property and peculiar efficacy because it is accomplished in the ordinary circumstances of the world."440
This witness of life, however, is not the sole element in the apostolate; the true apostle is on the lookout for occasions of announcing Christ by word, either to unbelievers . . . or to the faithful.441
Ad Gentes 15
But it is not enough that the Christian people be present and be organized in a given nation, nor is it enough to carry out an apostolate by way of example. They are organized for this purpose, they are present for this, to announce Christ to their non - Christian fellow - citizens by word and example, and to aid them toward the full reception of Christ.
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