Evangelium Vitae
Chapter 3. You Shall Not Kill
God's Holy Law
"If you would enter life, keep the commandments" (Mt 19:17): Gospel and commandment
52. "And behold, one came up to him, saying, 'Teacher, what good deed must I do, to have eternal life?' " (Mt 19:16). Jesus replied, "If you would enter life, keep the commandments" (Mt 19:17). The Teacher is speaking about eternal life, that is, a sharing in the life of God himself. This life is attained through the observance of the Lord's commandments, including the commandment "You shall not kill". This is the first precept from the Decalogue which Jesus quotes to the young man who asks him what commandments he should observe: "Jesus said, 'You shall not kill, You shall not commit adultery, You shall not steal...' " (Mt 19:18).
God's commandment is never detached from his love: it is always a gift meant for man's growth and joy. As such, it represents an essential and indispensable aspect of the Gospel, actually becoming "gospel" itself: joyful good news. The Gospel of life is both a great gift of God and an exacting task for humanity. It gives rise to amazement and gratitude in the person graced with freedom, and it asks to be welcomed, preserved and esteemed, with a deep sense of responsibility. In giving life to man, God demands that he love, respect and promote life. The gift thus becomes a commandment, and the commandment is itself a gift.
Man, as the living image of God, is willed by his Creator to be ruler and lord. Saint Gregory of Nyssa writes that "God made man capable of carrying out his role as king of the earth ... Man was created in the image of the One who governs the universe. Everything demonstrates that from the beginning man's nature was marked by royalty... Man is a king. Created to exercise dominion over the world, he was given a likeness to the king of the universe; he is the living image who participates by his dignity in the perfection of the divine archetype".38 Called to be fruitful and multiply, to subdue the earth and to exercise dominion over other lesser creatures (cf. Gen 1:28), man is ruler and lord not only over things but especially over himself, 39 and in a certain sense, over the life which he has received and which he is able to transmit through procreation, carried out with love and respect for God's plan. Man's lordship however is not absolute, but ministerial: it is a real reflection of the unique and infinite lordship of God. Hence man must exercise it with wisdom and love, sharing in the boundless wisdom and love of God. And this comes about through obedience to God's holy Law: a free and joyful obedience (cf. Ps 119), born of and fostered by an awareness that the precepts of the Lord are a gift of grace entrusted to man always and solely for his good, for the preservation of his personal dignity and the pursuit of his happiness.
With regard to things, but even more with regard to life, man is not the absolute master and final judge, but rather—and this is where his incomparable greatness lies-he is the "minister of God's plan".40
Life is entrusted to man as a treasure which must not be squandered, as a talent which must be used well. Man must render an account of it to his Master (cf. Mt 25:14-30; Lk 19:12-27).
"From man in regard to his fellow man I will demand an accounting for human life" (Gen 9:5): human life is sacred and inviolable
53. "Human life is sacred because from its beginning it involves 'the creative action of God', and it remains forever in a special relationship with the Creator, who is its sole end. God alone is the Lord of life from its beginning until its end: no one can, in any circumstance, claim for himself the right to destroy directly an innocent human being".41 With these words the Instruction Donum Vitae sets forth the central content of God's revelation on the sacredness and inviolability of human life.
Sacred Scripture in fact presents the precept "You shall not kill" as a divine commandment (Ex 20:13; Dt 5:17). As I have already emphasized, this commandment is found in the Decalogue, at the heart of the Covenant which the Lord makes with his chosen people; but it was already contained in the original covenant between God and humanity after the purifying punishment of the Flood, caused by the spread of sin and violence (cf. Gen 9:5-6).
God proclaims that he is absolute Lord of the life of man, who is formed in his image and likeness (cf. Gen 1:26-28). Human life is thus given a sacred and inviolable character, which reflects the inviolability of the Creator himself. Precisely for this reason God will severely judge every violation of the commandment "You shall not kill", the commandment which is at the basis of all life together in society. He is the "goel", the defender of the innocent (cf. Gen 4:9-15; Is 41:14; Jer 50:34; Ps 19:14). God thus shows that he does not delight in the death of the living (cf. Wis 1:13). Only Satan can delight therein: for through his envy death entered the world (cf. Wis 2:24). He who is "a murderer from the beginning", is also "a liar and the father of lies" (Jn 8:44). By deceiving man he leads him to projects of sin and death, making them appear as goals and fruits of life.
54. As explicitly formulated, the precept "You shall not kill" is strongly negative: it indicates the extreme limit which can never be exceeded. Implicitly, however, it encourages a positive attitude of absolute respect for life; it leads to the promotion of life and to progress along the way of a love which gives, receives and serves. The people of the Covenant, although slowly and with some contradictions, progressively matured in this way of thinking, and thus prepared for the great proclamation of Jesus that the commandment to love one's neighbour is like the commandment to love God; "on these two commandments depend all the law and the prophets" (cf. Mt 22:36-40). Saint Paul emphasizes that "the commandment ... you shall not kill ... and any other commandment, are summed up in this phrase: 'You shall love your neighbour as yourself' " (Rom 13:9; cf. Gal 5:14). Taken up and brought to fulfilment in the New Law, the commandment "You shall not kill" stands as an indispensable condition for being able "to enter life" (cf. Mt 19:16-19). In this same perspective, the words of the Apostle John have a categorical ring: "Anyone who hates his brother is a murderer, and you know that no murderer has eternal life abiding in him" (1 Jn 3:15).
From the beginning, the living Tradition of the Church—as shown by the Didache, the most ancient non-biblical Christian writing—categorically repeated the commandment "You shall not kill": "There are two ways, a way of life and a way of death; there is a great difference between them... In accordance with the precept of the teaching: you shall not kill ... you shall not put a child to death by abortion nor kill it once it is born ... The way of death is this: ... they show no compassion for the poor, they do not suffer with the suffering, they do not acknowledge their Creator, they kill their children and by abortion cause God's creatures to perish; they drive away the needy, oppress the suffering, they are advocates of the rich and unjust judges of the poor; they are filled with every sin. May you be able to stay ever apart, o children, from all these sins!". 42
As time passed, the Church's Tradition has always consistently taught the absolute and unchanging value of the commandment "You shall not kill". It is a known fact that in the first centuries, murder was put among the three most serious sins—along with apostasy and adultery—and required a particularly heavy and lengthy public penance before the repentant murderer could be granted forgiveness and readmission to the ecclesial community.
55. This should not cause surprise: to kill a human being, in whom the image of God is present, is a particularly serious sin. Only God is the master of life! Yet from the beginning, faced with the many and often tragic cases which occur in the life of individuals and society, Christian reflection has sought a fuller and deeper understanding of what God's commandment prohibits and prescribes. 43 There are in fact situations in which values proposed by God's Law seem to involve a genuine paradox. This happens for example in the case of legitimate defence, in which the right to protect one's own life and the duty not to harm someone else's life are difficult to reconcile in practice. Certainly, the intrinsic value of life and the duty to love oneself no less than others are the basis of a true right to self-defence. The demanding commandment of love of neighbour, set forth in the Old Testament and confirmed by Jesus, itself presupposes love of oneself as the basis of comparison: "You shall love your neighbour as yourself " (Mk 12:31). Consequently, no one can renounce the right to self-defence out of lack of love for life or for self. This can only be done in virtue of a heroic love which deepens and transfigures the love of self into a radical self-offering, according to the spirit of the Gospel Beatitudes (cf. Mt 5:38-40). The sublime example of this self-offering is the Lord Jesus himself.
Moreover, "legitimate defence can be not only a right but a grave duty for someone responsible for another's life, the common good of the family or of the State".44 Unfortunately it happens that the need to render the aggressor incapable of causing harm sometimes involves taking his life. In this case, the fatal outcome is attributable to the aggressor whose action brought it about, even though he may not be morally responsible because of a lack of the use of reason. 45