480. What does the Lord ask of every person in regard to peace?

480. What does the Lord ask of every person in regard to peace?   

(Comp 480) The Lord proclaimed “Blessed are the peacemakers” (Matthew 5:9). He called for peace of heart and denounced the immorality of anger which is a desire for revenge for some evil suffered. He also denounced hatred which leads one to wish evil on one’s neighbor. These attitudes, if voluntary and consented to in matters of great importance, are mortal sins against charity.

“In brief”

(CCC 2330) "Blessed are the peacemakers, for they shall be called sons of God" (Mt 5:9).

To deepen and explain

(CCC 2302) By recalling the commandment, "You shall not kill" (Mt 5:21), our Lord asked for peace of heart and denounced murderous anger and hatred as immoral. Anger is a desire for revenge. "To desire vengeance in order to do evil to someone who should be punished is illicit," but it is praiseworthy to impose restitution "to correct vices and maintain justice" (St. Thomas Aquinas, STh II-II, 158, 1 ad 3). If anger reaches the point of a deliberate desire to kill or seriously wound a neighbor, it is gravely against charity; it is a mortal sin. The Lord says, "Everyone who is angry with his brother shall be liable to judgment" (Mt 5:22).

Reflection

(CCC 2303) Deliberate hatred is contrary to charity. Hatred of the neighbor is a sin when one deliberately wishes him evil. Hatred of the neighbor is a grave sin when one deliberately desires him grave harm. "But I say to you, Love your enemies and pray for those who persecute you, so that you may be sons of your Father who is in heaven" (Mt 5:44-45).

(Next question: What is peace in this world?)