Post-Constantinian Christians: Union of Church and State
In the period following Constantine’s recognition of the church as the official religion in early 313, Christianity
ceased to advocate for freedom of conscience against state authority. The inevitable consequence of the merger
of religious and political power was the elimination of any space for individuals to exercise their freedom and
choose a spiritual life (Gemalmaz, 2001). In this context, the principle of atonement—the shedding of the blood
of those who shed blood—was interpreted as legitimizing the state’s implementation of the death penalty; it was
accepted that the state, as God’s representative, would also punish crimes committed against God’s established
order. According to the principle of atonement, a sinner can only have their sins forgiven through death. This
understanding also underlies the idea that the executioner is a representative of divine justice. From another
perspective, this interpretation could suggest that Christianity replaced the ancient principle of vengeance with
the principles of atonement and making the guilty pay for their wrongdoing (Schaft, 1911).
Councils and the Formation of Orthodox Christian Principles
The Council of Nicaea (325), considered the manifestation of the alliance between the state and the church, and
the subsequent Ecumenical Council of Constantinople (381), laid the foundations of the Orthodox faith. In
particular, Theodosius I (379-382), a defender of the dogmas and faith formula established at the Council of
Nicaea, relentlessly persecuted pagans and members of Christian sects whose beliefs differed from the Orthodox
faith. This was because Orthodox Christianity was recognized as the sole official religion of the state.
Consequently, members of different religions and sects were considered ineligible for life (Ostrogorsky, 1995).
First, in 385, six people, including prominent and noble figures, were killed at Treves because of their sectarian
differences (Schaft, 1911). Indeed, St. Augustine, Bishop of Hippo (354-420), justified the use of force against
recalcitrant Donatists, embracing all means of oppression to keep people in the sole saving truth revealed by Jesus
Christ (Luke 14:23). This view gave rise to the ideology of “necessary truth”, which had negative repercussions
on subsequent Christian history. In this context, to the extent that the church’s position conflicted with the
interests of Christian kings, the claim that “there is no salvation outside the church” served as ideological support
to legitimize the death penalty for millions (Harman, 1997).
The Middle Ages: Institutionalization of Capital Punishment
Compared to the Patristic period, the Middle Ages adopted a more intolerant attitude. While Jews and Muslims
were granted a certain degree of freedom of conscience, no tolerance was shown towards heretics and schismatics.
From the 11th century onwards, the death penalty became the de facto practice for those who apostatized after
being baptized. In the 12th century, Pope Gregory IX, in agreement with King Frederick II, established the
Inquisition to combat newly emerging Christian sects (Eliade & Couliano, 1997). Executions of death sentences
handed down by Inquisition courts were generally carried out by burning the perpetrators at the stake or breaking
their bones. The basis of this practice was St. Augustine’s view that the state had the right to punish apostates,
but that the punishment should not be bloodshed (Camus & Arthur Koestler, 1986). Similarly, scholars such as
Chrysostom, Lactantius, Origen, and Cyprian also stated that blood should not be shed during punishment
(Vacandard, 1979). On the other hand, the Inquisition courts’ decision to punish members of different sects with
death was theoretically based on Roman law. In Roman law, crimes such as theft, witchcraft, and desecration of
sacred objects were punished with death to maintain social order. Similarly, sects were considered disruptive to
social order, and therefore, members of these sects were deemed worthy of death (Finucane, 1914).
Inquisition courts employed different trial procedures than ecclesiastical courts. Indeed, even those whose
testimony would not be accepted in ordinary trials were admitted in the Inquisition courts, and lawyers were not
used to shorten the trial. If the judge’s evidence was insufficient to convict, the confession of the defendant,
obtained through torture, was accepted as legal evidence for a death sentence. Furthermore, due to the
extraordinary nature of the Inquisition courts, comprehensive documentation is lacking. Therefore, it is
impossible to precisely determine the number of death penalty sentences issued by these courts. Rather, there is
general information that convicts, while still defendants, were tried under judicial procedures that were entirely
unfavorable to them, and that the sentences were carried out with severe torture. For example, in the 14th century,
Bernard Gui ordered that 42 of the 930 prisoners sentenced to death be executed by burning alive (Finucane,
1914).