The beneficent action of the Church upon the State is described by Saint Augustine, who comments:
“Let those who say that the teachings of Christ are harmful to the State find armies with soldiers who live up to the standards of the teachings of Jesus. Let them provide governors, husbands and wives, parents and children, masters and servants, kings, judges, taxpayers and tax collectors who can compare to those who take Christian teachings to heart.”
Free Book:“Then let them dare to say that such teaching is contrary to the welfare of the State! Indeed, under no circumstances can they fail to realize that this teaching is the greatest safeguard of the State when faithfully observed.” (“Epist. 138 ad Marcellinum,” [Chap. 2, no. 15]) in Opera Omnia, vol. 2, in J.P. Migne, Patrologia Latina, col. 532). (TFP translation.)