In his comments on the sixth commandment, “You shall not murder,” John Calvin writes, “The purport of this commandment is that since the Lord has bound the whole human race by a kind of unity, the safety of all ought to be considered as entrusted to each.” As creatures made in God’s image, we are called to do whatever is required to “defend the life of our neighbor; to promote whatever tends to his tranquility, to be vigilant in warding off harm, and, when danger comes, to assist in removing it” (Institutes of the Christian Religion, 2.8.39).
Calvin’s explanation highlights what the Christian tradition has often referred to as the commitment of “solidarity.” The sixth commandment, according to Christian teaching, does not merely prohibit outright violence. It calls us to do everything in our power to protect and preserve human life. Calvin puts it quite strongly: “if you do not according to your means and opportunity study to defend his safety, by that inhumanity you violate the law” (2.8.40). Note Calvin’s use of the word study. This is not simply a casual obligation. Unless we study and work, as individuals and collectively, to do all that we can to ensure the safety of our neighbors, we are guilty of inhumanity.
The Heidelberg Catechism teaches the same interpretation of the sixth commandment in Lord’s Day 40. The prohibition of murder not only means that I am not to “belittle, insult, hate, or kill my neighbor – not by my thoughts, my words, my look or gesture, and certainly not by actual deeds.” It also requires that I love my neighbor as myself, being “patient, peace-loving, gentle, merciful, and friendly to him,” and that I “protect him from harm as much as [I] can.” I am neither to harm or “recklessly endanger” a person made in the image of God.
In short, the catechism calls us not merely to be reactive against threats to the sanctity of life. We must be proactive in fostering the conditions necessary for life. We do this only when we stand in solidarity with one another in love, mercy, and friendship.
The Heidelberg Catechism makes it quite clear that these obligations do not merely fall upon human beings as individuals. On the contrary, government is armed with the sword for this very purpose: “Prevention of murder.” It is striking that the catechism does not merely say – as some Christians have said – that government is given the sword to punish those guilty of murder. It calls the government to use its power to prevent murder from happening in the first place. Government, too, is called to be proactive, not merely reactive. Indeed, protecting and promoting the sanctity of human life is the primary reason why we have coercive government at all.
Catholic theologians have described Christian teaching as protecting the sanctity of life as a “seamless garment” from conception to the grave. Protestant ethicists have emphasized the need for Christians to hold to a “consistent ethic of life.” This has several important implications.
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