+JMJ+
All that hinges on the definition of murder. You say that all the circumstances must be taken into account to decide if a murder actually took place or not. Which is fine, but without a proper definition it just hangs in the air. So please, define “murder” for me, so we can go on.
Actually, let us start from a more basic principle of morality, because so much, including murder
and sexual immorality, depends on it. And what is this basic principle? The sacredness of human life.
CCC 2258 “
Human life is sacred because from its beginning it involves the creative action of God and it remains for ever 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…”
Atheists misunderstand Christians when the latter say there can be no morality when there is no God. The former think that means when there is no God no one can then punish evildoers. No, it just means that the source of all morality
is the special relationship between God and man. Man was made for God’s love; man’s
reason for existing is God’s love. Man’s life is sacred, i.e. dedicated for God, to God, by God. Without God, man’s life has no meaning, because then man has no reason for living.
Therefore, any attempt to subvert this relationship between God and man is evil, including and especially
a direct, deliberate attempt to end a man’s life. This is murder. “The murderer and those who cooperate voluntarily in murder
commit a sin that cries out to heaven for vengeance. (CCC 2268)”
There is, however, another principle that we have to add:
the principle of double effect.
The Church teaches that one may legitimately choose to carry out an act that is morally good, but which has one or more unintended side effects that are morally evil. The principle of double effect has several guideline that must be met for an act to be morally acceptable:
- The intended act must be good in itself. The intended act may not be morally evil.
- The good effect of the act must be that which is directly intended by the one who carries out the act. The bad effect that results from the act may be foreseen by the agent but must be unintended.
- The good effect must not be brought about by using morally evil means.
- The good effect must be of equal or greater proportion to any evil effect which would result.
- Acts that have morally negative effects are permissible only when truly necessary, i.e., when there are no other means by which the good may be obtained.
Source
To show the difficulties, let me present a few problems.
- State sanctioned executions are usually not considered “murder”.
- Killing in a war is usually not considered to be a “murder”. (Also consider “colleteral damage”.)
- Killing someone in self-defense is usually not considered to be a “murder”.
Also what does “self-defense” mean? Does it only apply to oneself? Or does it apply to protect one’s children? Or the neighbor’s children? Or the neigbor’s life ? Or protect a total stranger’s life?
You should read the Catechism of the Catholic Church: it is all there, all in the same section.
Legitimate defense
2263 The legitimate defense of persons and societies is not an exception to the prohibition against the murder of the innocent that constitutes intentional killing. “The act of self-defense can have a double effect: the preservation of one’s own life; and the killing of the aggressor. . . . The one is intended, the other is not.”
2264 Love toward oneself remains a fundamental principle of morality. Therefore it is legitimate to insist on respect for one’s own right to life. Someone who defends his life is not guilty of murder even if he is forced to deal his aggressor a lethal blow:
If a man in self-defense uses more than necessary violence, it will be unlawful: whereas if he repels force with moderation, his defense will be lawful. . . . Nor is it necessary for salvation that a man omit the act of moderate self-defense to avoid killing the other man, since one is bound to take more care of one’s own life than of another’s.
2265 Legitimate defense can be not only a right but a grave duty for one who is responsible for the lives of others. The defense of the common good requires that an unjust aggressor be rendered unable to cause harm. For this reason, those who legitimately hold authority also have the right to use arms to repel aggressors against the civil community entrusted to their responsibility.
continued