In the Pastoral Constitution on the Church in the Modern World today, we conclude chapter 4 on the political community.
Article 76 closes out the chapter with a look at the relationship between the political community with the Church.
Here are the footnotes:
9. Cf. Second Vatican Council, Dogmatic Constitution on the Church, n. 13: AAS 57 (1965), p. 17.
10. Cf. Luke 2:14.