Modern and historical Christian thought on war. Is it ever justified, and if so, what makes a 'just' war?
Last updated 2009-08-03
Modern and historical Christian thought on war. Is it ever justified, and if so, what makes a 'just' war?
The main Christian view of war ethics is contained in the doctrine of the Just War.
The basic assumption of modern Christians is that war is rarely justified and should be avoided unless the Just War conditions are met.
An individual Christian may believe that the standard of evidence and argument required for them to support a war is higher than the standard of evidence that national leaders may require to go to war.
Christianity is no longer (if it ever was) wholly against war. Some say that modern Christianity has a 'presumption against war', but others say that it has a 'presumption against injustice' - and the bias against war comes from the injustice that war can do.
This view says that the aim of Christianity is to promote a world in which peace and justice flourish everywhere: war may sometimes be the tool needed to do this, and waging war may sometimes be a lesser evil (a lesser injustice) than allowing injustice to persist or tolerating the victimisation of innocent people.
How do Christian chaplains in the armed forces feel about war?
Christians have a long history of refusing to take part in war. Many Christians are pacifists of various types. These range from peace activists to those who need a great deal to convince them that war is justified.
The Christian argument for pacifism is based partly on Jesus's teaching in the Sermon on the Mount and other places, and in the example that Jesus sets Christians through his life.
Those who argue against this say that Christ's pacifist nature and behaviour were part of his unique role as redeemer of humanity. Christians are not redeemers and so their conduct should follow Christ by seeking to bring peace and justice to the world even if this means not always 'turning the other cheek'.
Christian groups that emphasise pacifism include:
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The Christian view of war has changed throughout the history of the faith.
The early church (the first 300 years) was strongly pacifist. Origen said that Christians "do not go forth as soldiers". Tertullian wrote "only without the sword can the Christian wage war: for the Lord has abolished the sword." Clement of Alexandria wrote "...he who holds the sword must cast it away and that if one of the faithful becomes a soldier he must be rejected by the Church, for he has scorned God."
This changed rapidly in the time of Constantine - the Council of Arles in 314 said that to forbid "the state the right to go to war was to condemn it to extinction", and shortly after that Christian philosophers began to formulate the doctrine of the Just War.
For many centuries Christians believed that it was right and proper to use violence (and thus war) to spread the faith and deal with its opponents. They did not regard violence as an inherently bad thing: whether it was bad or not depended on what it was being used for.
This thinking is covered under holy wars - the main examples of which, for Christians, are the Crusades.
From Constantine onwards Christian writers and preachers have used warlike and soldierly metaphors in their writing about the faith.
The idea that violence is not inherently bad can also be seen in some versions of the Just War doctrine - violence (war) can be a vital tool in restoring justice and peace.
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