Following is a section from the Apostolic Exhortation Christifideles Laici (On the Vocation and Mission of the Lay Faithful in the Church and in the World) issued by Pope John Paul II on December 30, 1988. This passage stresses the call of the faithful to defend human life.  

38. In effect, the acknowledgment of the personal dignity of every human being demands the respect, the defense and the promotion of the rights of the human person. It is a question of inherent, universal and inviolable rights. No one, no individual, no group, no authority, no state, can change -- let alone eliminate -- them because such rights find their source in God himself.

The inviolability of the person which is a reflection of the absolute inviolability of God, finds its primary and fundamental expression in the inviolability of human life. Above all, the common outcry, which is justly made on behalf of human rights -- for example, the right to health, to home, to work, to family, to culture -- is false and illusory if the right to life, the most basic and fundamental right and the condition for all other personal rights, is not defended with maximum determination.

The Church has never yielded in the face of all the violations that the right to life of every human being has received, and continues to receive, both from individuals and from those in authority. The human being is entitled to such rights in every phase of development, from conception until natural death; and in every condition, whether healthy or sick, whole or handicapped, rich or poor. The Second Vatican Council openly proclaimed: "All offenses against life itself, such as every kind of murder, genocide, abortion, euthanasia and willful suicide; all violations of the integrity of the human person, such as mutilation, physical and mental torture, undue psychological pressures; all offenses against human dignity, such as subhuman living conditions, arbitrary imprisonment, deportation, slavery, prostitution, the selling of women and children, degrading working conditions where men are treated as mere tools for profit rather than free and responsible persons; all these and the like are certainly criminal: they poison human society; and they do more harm to those who practice them than those who suffer from the injury. Moreover, they are a supreme dishonor to the Creator." (Gaudium et Spes, 27)

If, indeed, everyone has the mission and responsibility of acknowledging the personal dignity of every human being and of defending the right to life, some lay faithful are given a particular title to this task: such as parents, teachers, health care workers and the many who hold economic and political power.

The Church today lives a fundamental aspect of her mission in lovingly and generously accepting every human being, especially those who are weak and sick. This is made all the more necessary as a "culture of death" threatens to take control. In fact, "the Church family believes that human life, even if weak and suffering, is always a wonderful gift of God's goodness. Against the pessimism and selfishness which casts a shadow over the world, the Church stands for life: in each human life she sees the splendor of that 'Yes,' that 'Amen,' which is Christ himself (cf. 2 Cor 1:19; Rev 3:14). To the 'No' which assails and afflicts the world, she replies with this living 'Yes,' this defending of the human person and the world from all who plot against life." (Familiaris Consortio 30). It is the responsibility of the lay faithful, who more directly through their vocation or their profession are involved in accepting life, to make the Church's "Yes" to human life concrete and efficacious.

The enormous development of biological and medical science, united to an amazing power in technology, today provides possibilities on the very frontier of human life which imply new responsibilities. In fact, today humanity is in the position not only of "observing" but even "exercising a control over" human life at its very beginning and in its first stages of development.

The moral conscience of humanity is not able to turn aside or remain indifferent in the face of these gigantic strides accomplished by a technology that is acquiring a continually more extensive and profound dominion over the working processes that govern procreation and the first phases of human life. Today as perhaps never before in history or in this field, wisdom shows itself to be the only firm basis to salvation, in that persons engaged in scientific research and in its application are always to act with intelligence and love, that is, respecting, even remaining in veneration of the inviolable dignity of the personhood of every human being from the first moment of life's existence. This occurs when science and technology are committed with licit means to the defense of life and the cure of disease in its beginnings, refusing on the contrary -- even for the dignity of research itself -- to perform operations that result in falsifying the genetic patrimony of the individual and of human generative power. (See Donum Vitae.)

The lay faithful, having responsibility in various capacities and at different levels of science as well as in the medical, social, legislative and economic fields must courageously accept the "challenge" posed by new problems in bioethics. The Synod Fathers used these words: "Christians ought to exercise their responsibilities as masters of science and technology, and not become their slaves.... In view of the moral challenges presented by enormous new technological power endangering not only fundamental human rights but the very biological essence of the human species, it is of utmost importance that lay Christians -- with the help of the universal Church -- take up the task of calling culture back to the principles of an authentic humanism, giving a dynamic and sure foundation to the promotion and defense of the rights of the human being in one's very essence -- an essence which the preaching of the Gospel reveals to all.

Today maximum vigilance must be exercised by everyone in the face of the phenomenon of the concentration of power and technology. In fact, such a concentration has a tendency to manipulate not only the biological essence but the very content of people's consciences and life-styles, thereby worsening the condition of entire peoples by discrimination and marginization.

More Teachings of the Magisterium on Life