Evangelii Nuntiandi §71

71. One cannot fail to stress the evangelizing action of the family in the evangelizing apostolate of the laity.

At different moments in the Church's history and also in the Second Vatican Council, the family has well deserved the beautiful name of "domestic Church."[106] This means that there should be found in every Christian family the various aspects of the entire Church. Furthermore, the family, like the Church, ought to be a place where the Gospel is transmitted and from which the Gospel radiates.

In a family which is conscious of this mission, all the members evangelize and are evangelized. The parents not only communicate the Gospel to their children, but from their children they can themselves receive the same Gospel as deeply lived by them.

And such a family becomes the evangelizer of many other families, and of the neighborhood of which it forms part. Families resulting from a mixed marriage also have the duty of proclaiming Christ to the children in the fullness of the consequences of a common Baptism; they have moreover the difficult task of becoming builders of unity.

106. Dogmatic Constitution on the Church Lumen Gentium, 11: AAS 57 (1965), p. 16; Decree on the Apostolate of the Laity Apostolicam Actuositatem, 11, AAS 58 (1966), p. 848; Saint John Chrysostom, In Genesim Serm. VI, 2; VII, 1: PG 54, 607-68.