CCC 1655

Christ chose to be born and grow up in the bosom of the holy family of Joseph and Mary. the Church is nothing other than "the family of God." From the beginning, the core of the Church was often constituted by those who had become believers "together with all [their] household."¹⁶⁴ Cf. Acts 18:8. When they were converted, they desired that "their whole household" should also be saved.¹⁶⁵ Cf. Acts 16:31; Acts 11:14. These families who became believers were islands of Christian life in an unbelieving world.