The issue of self-defense and the protection of human life, especially in the event of invasion or attack, is one of the most sensitive and complex subjects in Christian thought. While the central message of the New Testament is love, forbearance, and peace, the Church has always recognized the necessity of protecting the innocent and defending one's homeland.
The following are the relevant references and
theological perspectives arranged by category.
1. Old
Testament
In the Old Testament, the concepts of self-defense and
the defense of the community or nation against foreign invaders are strongly
emphasized and explicitly permitted.
Exodus 22:2
There is a clear legal provision concerning
self-defense during the night:
"If a thief is found breaking in and is struck so
that he dies, there shall be no bloodguilt for him."
If a thief is caught breaking into a house at night
and is struck and dies, the one who struck him is not considered guilty of
murder, since the act is regarded as self-defense in circumstances where the
danger cannot be clearly assessed.
Nehemiah
4:14
When the Jews were rebuilding the walls of Jerusalem
and were threatened by hostile enemies, Nehemiah exhorted them:
"Fight for your brothers, your sons, your
daughters, your wives, and your homes."
The Example of Abraham (Genesis 14)
When Abraham learned that his nephew Lot had been
taken captive by invading kings, he armed his men, pursued the attackers, and
rescued him. His action was later blessed by Melchizedek.
2. New
Testament
The New Testament focuses primarily on spiritual life
and enduring persecution for the sake of faith, but it does not abolish the
responsibility to protect others.
Luke 22:36
Shortly before His arrest, Christ told His disciples:
"...and
let the one who has no sword sell his cloak and buy one."
Although many Church Fathers interpret this passage
allegorically, referring to the spiritual trials that lay ahead, it
nevertheless indicates that the possession of means of protection was not
considered inherently forbidden in a hostile world.
John 15:13
The supreme expression of sacrificial love is found in
Christ's words:
"Greater love has no one than this, that someone
lay down his life for his friends."
In the event of an invasion, the soldier or citizen
who defends others does not fight out of hatred but out of love, seeking to
protect women, children, and those who are helpless.
Romans 13:4
The Apostle Paul teaches that secular authority,
including military and police institutions, is ordained by God for the
preservation of good and the restraint of evil:
"For he is God's servant for your good... for he
does not bear the sword in vain."
Civil authority is understood as a minister of God
charged with maintaining justice and restraining wrongdoing.
3. Writings of the Church Fathers and Saints
The Church Fathers distinguished clearly between
killing motivated by hatred or revenge and killing that occurs in time of war
in defense of one's homeland and the vulnerable.
Saint
Athanasius the Great
Perhaps the clearest statement preserved in the Church's
tradition is:
"It is not lawful to kill indiscriminately; but
to slay one's enemies in war is both lawful and worthy of praise."
Saint Athanasius explains that soldiers defending
their country protect the freedom and bodily safety of their fellow citizens.
Saint
Augustine
Saint Augustine formulated the theory of the Just War.
He emphasized that resisting violent aggression can be a moral duty. If someone
has the ability to prevent an innocent person from being harmed and refuses to
act, he becomes, in a sense, complicit in the evil.
Saint Cyril (Mission to the Saracens)
When Muslims asked Saint Cyril why Christians fight if
Christ commanded them to turn the other cheek, he replied:
"Christ commanded us to endure personal insults.
Yet He also taught us to lay down our lives for our brethren. When you invade
our country, you do not insult us personally; you take our brothers captive,
destroy their families, and compel them to renounce their faith. Therefore, we
defend ourselves."
Saint
Paisios of Mount Athos
Saint Paisios, who served as a radio operator during
his military service, would say:
"If someone comes to harm me personally, I ought,
as a monk, to forgive him. But if he seeks to harm my country or my neighbour's
family, I have a duty to take up arms and stop him, because this too is love
for one's neighbour."
Saint
Isidore of Pelusium (5th Century)
Saint Isidore, one of the Church's most distinguished
theologians and letter writers, wrote concerning warfare:
"Not to wage war is better, but to fight is
sometimes necessary, lest the innocent be slaughtered."
He explains that the purpose of the defending soldier
is not destruction but the restraint of evil.
The question of whether a Christian may defend
himself, even to the point of killing an attacker when his own life or that of
his family is under immediate threat, is a delicate matter with profound moral
and spiritual implications.
Orthodox tradition distinguishes between the calling
of the monk, who is expected to embrace complete non-violence and imitate
Christ's martyrdom, and that of the layperson, for whom the protection of life
is regarded as a duty.
The following passages, canons, and examples from the
lives of the saints shed further light on this issue.
Additional Testimonies
Exodus
21:12–13
The Law of Moses distinguishes premeditated murder
from accidental killing or killing committed in circumstances of conflict or
self-defense:
"But if he did not act intentionally, and God
delivered him into his hand, I will appoint for you a place to which he may
flee."
Thus, Scripture recognizes that not all killing
carries the same degree of moral responsibility.
1 Timothy
5:8
The Apostle Paul teaches:
"But if anyone does not provide for his
relatives, and especially for members of his household, he has denied the faith
and is worse than an unbeliever."
Theological interpretation extends this duty not only
to material support but also to the physical protection of one's family.
Saint John
the Faster (7th Century),
Canon 21
Saint John prescribes spiritual remedies for various
sins and clarifies:
"Whoever kills in war, or while defending himself
against robbers, or in some other similar manner, is not regarded as a
murderer."
Saint John
Climacus (6th Century)
Although writing primarily for monks, Saint John makes
an important distinction concerning intention:
"It is one thing to defend oneself out of fear of
death, and quite another to act out of hatred."
Defending oneself because one's life is threatened is
fundamentally different from acting out of hatred or revenge. The former may be
excusable; the latter is sinful.
