CATECHISM OF THE CATHOLIC CHURCH
SECOND EDITION

Paragraphs 2327–2331

2327 Because of the evils and injustices that all war brings with it, we must do everything reasonably possible to avoid it. The Church prays: "From famine, pestilence, and war, O Lord, deliver us."
2328 The Church and human reason assert the permanent validity of the moral law during armed conflicts. Practices deliberately contrary to the law of nations and to its universal principles are crimes.
2329 "The arms race is one of the greatest curses on the human race and the harm it inflicts on the poor is more than can be endured" (GS 81 § 3).
2330 "Blessed are the peacemakers, for they shall be called sons of God" (Mt 5:9).

You shall not commit adultery.

You have heard that it was said, "You shall not commit adultery." But I say to you that every one who looks at a woman lustfully has already committed adultery with her in his heart.

2331 "God is love and in himself he lives a mystery of personal loving communion. Creating the human race in his own image . . .. God inscribed in the humanity of man and woman the vocation, and thus the capacity and responsibility, of love and communion."

"God created man in his own image . . . male and female he created them"; He blessed them and said, "Be fruitful and multiply"; "When God created man, he made him in the likeness of God. Male and female he created them, and he blessed them and named them Man when they were created."