Evangelium Vitae §77

⁷⁷ This new law also gives spirit and shape to the commandment "You shall not kill". For the Christian it involves an absolute imperative to respect, love and promote the life of every brother and sister, in accordance with the requirements of God's bountiful love in Jesus Christ. "He laid down his life for us; and we ought to lay down our lives for the brethren" (1 Jn 3:16). The commandment "You shall not kill", even in its more positive aspects of respecting, loving and promoting human life, is binding on every individual human being. It resounds in the moral conscience of everyone as an irrepressible echo of the original covenant of God the Creator with mankind. It can be recognized by everyone through the light of reason and it can be observed thanks to the mysterious working of the Spirit who, blowing where he wills (cf. Jn 3:8), comes to and involves every person living in this world. It is therefore a service of love which we are all committed to ensure to our neighbour, that his or her life may be always defended and promoted, especially when it is weak or threatened. It is not only a personal but a social concern which we must all foster: a concern to make unconditional respect for human life the foundation of a renewed society. We are asked to love and honour the life of every man and woman and to work with perseverance and courage so that our time, marked by all too many signs of death, may at last witness the establishment of a new culture of life, the fruit of the culture of truth and of love.