Catechism of the Council of Trent: No Murder
Remedies Against The Violation Of This Commandment
From what has been said, it is easy to see how inclined man is to those sins which are prohibited by this Commandment, and how many are guilty of murder, if not in fact, at least in desire. As, then, the Sacred Scriptures prescribe remedies for so dangerous a disease, the pastor should spare no pains in making them known to the faithful.
Of these remedies the most efficacious is to form a just conception of the wickedness of murder. The enormity of this sin is manifest from many and weighty passages of Holy Scripture. So much does God abominate homicide that He declares in Holy Writ that of the very beast of the field He will exact vengeance for the life of man, commanding the beast that injures man to be put to death. And if (the Almighty) commanded man to have a horror of blood, He did so for no other reason than to impress on his mind the obligation of entirely refraining, both in act and desire, from the enormity of homicide.
The murderer is the worst enemy of his species, and consequently of nature. To the utmost of his power he destroys the universal work of God by the destruction of man, since God declares that He created all things for man's sake. Nay, as it is forbidden in Genesis to take human life, because God created man to his own image and likeness, he who makes away with God's image offers great injury to God, and almost seems to lay violent hands on God Himself !
David, thinking of this with a mind divinely illumined, complained bitterly of the bloodthirsty in these words: Their feet are swift to shed blood. He does not simply say, they kill, but, they shed blood, words which serve to mark the enormity of that execrable crime and to denote the barbarous cruelty of the murderer. With a view also to describe in particular how the murderer is precipitated by the impulse of the devil into the commission of such a crime, he says: Their feet are swift.
Positive Part of this commandment
Love Of Neighbour Inculcated
The mandatory part of this Commandment, as Christ our Lord enjoins, requires that we have peace with all men. Interpreting the Commandment He says: If therefore thou offer thy gift at the altar, and there thou remember that thy brother hath anything against thee; leave there thy offering before the altar, and go first to be reconciled to thy brother, and then coming thou shalt offer thy gift, etc.
Charity To All Commanded
In explaining this admonition, the pastor should show that it inculcates the duty of charity towards all without exception. In his instruction on the precept he should exhort the faithful as much as possible to the practice of this virtue, since it is especially included in this precept. For since hatred is clearly forbidden by this Commandment, as whosoever hateth his brother is a murderer, it follows, as an evident consequence, that the Commandment also inculcates charity and love.
Patience, Beneficence And Mildness Commanded
And since the Commandment inculcates charity and love, it must also enjoin all those duties and good offices which follow in their train. Charity is patient, says St. Paul. We are therefore commanded patience, in which, as the Redeemer teaches, we shall possess our souls. Charity is kind; beneficence is, therefore, the friend and companion of charity. The virtue of beneficence and kindness has a great range. Its principal offices are to relieve the wants of the poor, to feed the hungry, to give drink to the thirsty, to clothe the naked; and in all these acts of beneficence we should proportion our liberality to the wants and necessities of those we help.
These works of beneficence and goodness, in themselves exalted, become still more illustrious when done towards an enemy; for our Saviour says: Love your enemies, do good to them that hate you, which also the Apostle enjoins in these words: If thine enemy be hungry, give him to eat: if he thirst, give him to drink. For, doing this, thou shalt heap coals of fire on his head. Be not overcome by evil, but overcome evil by good.
Finally, if we consider the law of charity, which is kind, we shall be convinced that to practice the good offices of mildness, clemency, and other kindred virtues, is a duty prescribed by that law.
Forgiveness Of Injuries Commanded
But the most important duty of all, and that which is the fullest expression of charity, and to the practice of which we should most habituate ourselves, is to pardon and forgive from the heart the injuries which we may have received from others. The Sacred Scriptures, as we have already observed, frequently admonish and exhort us to a full compliance with this duty. Not only do they pronounce blessed those who do this, but they also declare that God grants pardon to those who really fulfil this duty, while He refuses pardon to those who neglect it, or refuse to obey it.
How to Persuade Men to Forgive Injuries
As the desire of revenge is almost natural to man, it becomes necessary for the pastor to exert his utmost diligence not only to instruct, but also earnestly to persuade the faithful, that a Christian should forgive and forget injuries; and as this is a duty frequently inculcated by sacred writers, he should consult them on the subject, in order to be able to subdue the pertinacity of those whose minds are obstinately bent on revenge, and he should have ready the forcible and appropriate arguments which those Fathers piously employed. The three following considerations, however, demand particular exposition.
All We Have To Endure Comes From God
First, he who thinks himself injured ought above all to be persuaded that the man on whom he desires to be revenged was not the principal cause of the loss or injury. Thus that admirable man, Job, when violently injured by the Sabeans, the Chaldeans, and by Satan, took no account of these, but as a righteous and very holy man exclaimed with no less truth than piety: The Lord gave, the Lord hath taken away. The words and the example of that man of patience should, therefore, convince Christians, and the conviction is most just, that whatever chastisements we endure in this life come from the hand of God, the Father and Author of all justice and mercy. He chastises us not as enemies, but, in His infinite goodness, corrects us as children. To view the matter in its true light, men, in these cases, are nothing more than the ministers and agents of God. One man, it is true, may cherish the worst feelings towards another, he may harbour the most malignant hatred against him; but, without the permission of God, he can do him no injury. This is why Joseph was able patiently to endure the wicked counsels of his brethren, and David, the injuries inflicted on him by Semei.
Here also applies an argument which St. Chrysostom has ably and learnedly handled. It is that no man is injured but by himself. Let the man, who considers himself injured by another, consider the matter in the right way and he will certainly find that he has received no injury or loss from others. For although he may have experienced injury from external causes, he is himself his greatest enemy by wickedly staining his soul with hatred, malevolence and envy.
Advantages Of Forgiveness
The second consideration is that there are two advantages, which are the special rewards of those, who, influenced by a holy desire to please God, freely forgive injuries. In the first place, God has promised that he who forgives, shall himself obtain forgiveness of sins, a promise which clearly shows how acceptable to God is this duty of piety. In the next place, the forgiveness of injuries ennobles and perfects our nature; for by it man is in some degree made like to God, Who maketh his sun to shine on the good and the bad, and raineth upon the just and the unjust.
Disadvantages Of Revenge
Finally, the disadvantages which arise from the refusal to pardon others are to be explained. The pastor, therefore, should place before the eyes of the unforgiving man that hatred is not only a grievous sin, but also that the longer it is indulged the more deeply rooted it becomes. The man, of whose heart this passion has once taken possession, thirsts for the blood of his enemy. Filled with the hope of revenge, he will spend his days and nights brooding over some evil design, so that his mind seems never to rest from malignant projects, or even from thoughts of blood. Thus it follows that never, or at least not without extreme difficulty, can he be induced generously to pardon an offence, or even to mitigate his hostility. Justly, therefore, is hatred compared to a wound in which the weapon remains firmly embedded.
Moreover, there are many evil consequences and sins which are linked together with this one sin of hatred. Hence these words of St. John: He that hateth his brother, is in darkness, and walketh in darkness, and knoweth not whither he goeth; because the darkness hath blinded his eyes. He must, therefore, frequently fall; for how can anyone view in a favourable light the words or actions of him whom he hates? Hence arise rash and unjust judgments, anger, envy, detractions, and other evils of the same sort, in which are often involved those who are connected by ties of friendship or blood; and thus does it frequently happen that this one sin is the prolific source of many.
Not without good reason is hatred called the sin of the devil. The devil was a murderer from the beginning; and hence our Lord Jesus Christ, the Son of God, when the Pharisees sought His life, said that they were begotten of their father the devil.
Remedies Against Hatred
Besides the reasons already adduced, which afford good grounds for detesting this sin, other and most suitable remedies are prescribed in the pages of Holy Writ.
Of these remedies the first and greatest is the example of the Redeemer, which we should set before our eyes as a model for imitation. For He, in whom even suspicion of fault could not be found, when scourged with rods, crowned with thorns, and finally nailed to a cross, uttered that most charitable prayer: Father, forgive them, for they know not what they do. And as the Apostle testifies: The sprinkling of his blood speaketh better than Abel.
Another remedy, prescribed by Ecclesiasticus, is to call to mind death and judgment: Remember thy last end, and thou shalt never sin. As if he had said: Reflect frequently and again and again that you must soon die, and since at death there will be nothing you desire or need more than great mercy from God, that now you should keep that mercy always before your mind. Thus the cruel desire for revenge will be extinguished; for you can discover no means better adapted, none more efficacious to obtain the mercy of God than the forgiveness of injuries and love towards those who in word or deed may have injured you or yours.