If to Christ our Lord is given all power in heaven and on earth; if all men, purchased by his precious blood, are by a new right subjected to his dominion; if this power embraces all men, it must be clear that not one of our faculties is exempt from his empire.

• He must reign in our minds, which should assent with perfect submission and firm belief to revealed truths and to the doctrines of Christ.
• He must reign in our wills, which should obey the laws and precepts of God.
• He must reign in our hearts, which should spurn natural desires and love God above all things, and cleave to him alone.
• He must reign in our bodies and in our members, which should serve as instruments for the interior sanctification of our souls…

Quas Primas: Encyclical of Pope Pius XI on the Feast of Christ the King, December 11, 1925