The Roman haruspex was a state employee. His job was to read omens from the entrails of sacrificed animals and tell the senate what the gods wanted. When the omens came out badly, the senate ordered the sacrifice repeated. They kept repeating it until the gods said the right thing, which happened to be what the senate wanted, conveniently. Before Alexander crossed into Persia, he sacrificed repeatedly at the Hellespont; the accounts of his campaigns are full of priests working the ritual until the signs aligned with what Alexander had already decided to do.1 Greek records are full of these kinds of events, not even recorded sarcastically, but just as a reference. This was not cynicism, it was the normal relationship between religion and political power in the ancient world. The gods spoke for the rulers, because the rulers controlled the priests who spoke for the gods.
Christianity broke free from this with: "Render unto Caesar what is Caesar's, and unto God what is God's" (Matthew 22:21). Two domains, not to be mixed. Augustine spent most of his City of God (413-426 AD) systematizing what that meant after Rome fell: the City of God and the City of Man are not the same, cannot be made the same, and the attempt to merge them produces something that is worse for both. This was new back then, no roman Haruspex nor Greek augur would have prioritized this as much. Christians forget it the moment power is an offer.
The point is not, primarily, that Christian leaders have been corrupt or faithless, though many have and are Any institution that becomes a path to political power will attract people who want political power. Those people are not there for the theology, but for the path it offers upwards in the power ladder. They are patient and effective because they are motivated, and what they are motivated by is power. They rise within the institution because rising within the institution is how they get what they came for. Once they have risen, they elevate people like themselves. The theology does not corrupt the politics. The politics corrupts the theology, because the people now setting the theological agenda were never primarily theologians. They were there for the ladder. The ladder happened to be the Church.
This mechanism does not require bad faith from everyone involved. Sincere believers participate in it too. A genuine Christian who believes that Christian governance would produce better outcomes is still, by supporting the church's political project, widening the door for people who want the power and have no interest in the outcomes. Incentives do not ask for your intentions before they operate.
The history shows the mechanism at work across independent cases, on multiple continents, across fifteen centuries. Constantine gave the church imperial protection in 313 AD. Within decades, simony was common, bishops were appointed for political loyalty rather than pastoral ability, and the Council of Nicaea was convened with an emperor in the chair who had strong preferences about what a united Christian empire required.2 The church gained everything it thought it wanted. What followed were centuries of clergy who owed their positions to political patrons and returned the favor accordingly. Priests that had to adapt their theology and guidance to the ruler that appointed them and his needs.
For example, The Investiture Controversy, running from 1076 to 1122, was a fight over who had the right to appoint bishops. Holy Roman Emperors and popes both wanted that right because bishops controlled land, armies, and the political loyalty of whole regions. The corruption that the Gregorian reformers spent generations trying to fix, clergy appointed for political service rather than pastoral calling, was the direct result of the church having made itself indispensable to medieval governance. The church won some battles in the Investiture fight. The corruption it was trying to fix was the price it had already paid for the power it had already taken.
By the Renaissance, the dynamic had advanced so far that several popes governed Italian city-states as secular princes, commanded armies, signed military alliances, and fathered children they placed in positions of political advantage. Alexander VI and Julius II were not theological aberrations, but rather what the institution produced once the path through it led to secular power. The church that wanted to influence the world had become a tool the world used to govern itself.
In Franco's Spain, from 1939 onward, the arrangement was worse even. The church gave the regime religious legitimacy. The regime gave the church institutional privilege, state funding, and control over education. The niños robados scandal, in which nuns and priests participated for decades in stealing newborn infants from Republican and working-class families to place with regime loyalists, with some estimates running to 300,000 children, is not an aberration from this picture.3 It is the picture. When the church's survival depends on the regime's survival, the church does what the regime needs. Post-Franco, Spain secularized at one of the fastest rates in Europe. The alliance did not protect the church's credibility. It spent it, and the bill came due all at once, now Spain having one of the lowest church attendance rates from all of Europe.
Against this, consider what happened in Poland. The Catholic Church under Soviet rule was refused, suppressed, and surveilled. It could not make itself useful to the state because the state wanted it gone. Forced into opposition, it became something different: an institution whose credibility came precisely from the fact that it had not been bought. It became the moral backbone of Solidarity, the movement that contributed more than any other single force to the peaceful end of Soviet communism in Eastern Europe, and it produced John Paul II. The Polish church had its own failures. It was also nationalist, and its record on Jewish Poles before and during the war is not a record anyone should be proud of. But it did not become a state chaplaincy. It remained capable of institutional moral opposition when it mattered. The Russian Orthodox Church, which had made the opposite choices across the Soviet decades, by 2022 had been absorbed so completely into the Russian state that Patriarch Kirill stood before his congregation and told them that dying in Putin's war in Ukraine was a path to salvation.4
The historical pattern does not belong to the distant past. The United States evangelical movement is not at the end of this road yet, but it is on it. The pattern is already visible: religious credibility is being spent on political projects whose demands will not stop. The widening gap between American evangelical leadership and the global church is the same signal the historical cases already gave. When the coalition's needs and the church's integrity diverge, it is the integrity that yields.
To believers inside this project who care about the faith: the argument above is not a liberal argument about the separation of church and state. It is an argument made from within Christian history about what the church becomes when it makes itself a ladder. Constantine's church became an instrument of imperial politics within a generation. Franco's bishops became collaborators in child theft. Patriarch Kirill blesses wars. These are not cautionary tales from outside Christianity. They are what Christianity produced when it reached for the state, or rather what the state produced once it learned to use Christianity.
The question is not whether you will gain political influence. You may. The question is what will be left of what you started with once the people who wanted the influence are done with it.
Alexander's use of sacrificial ritual before major engagements is documented in Arrian's Anabasis of Alexander and Plutarch's Life of Alexander. The Hellespont crossing sacrifice is described in Arrian, Book 1. The pattern of repeated consultation until favorable omens were obtained is characteristic of Greek military practice generally; see Walter Burkert, Greek Religion (1985), on the role of the mantis in military campaigns.
Constantine's role at Nicaea (325 AD) is documented in Eusebius of Caesarea's Life of Constantine and in the council records themselves. His preference for doctrinal unity was explicitly political: a divided church was a problem for imperial administration. The standard modern treatment is Henry Chadwick, The Early Church (1967). The claim that imperial preference shaped the pace and conditions of resolution is on firmer ground than the claim that it determined the theological outcome; the draft uses the softer version.
The niños robados (stolen children) scandal has been documented by Spanish courts, investigative journalists, and a 2011 UN inquiry. The figure of 300,000 is the estimate most frequently cited by advocacy groups and some journalism; court-confirmed cases are a fraction of that figure. Key sources: El País investigative reporting (2011-2012); Baltasar Garzón's 2008 judicial investigation documents.
Patriarch Kirill's sermon of March 6, 2022, delivered at the Cathedral of Christ the Saviour in Moscow, stated that dying while fulfilling one's military duty constitutes a sacrifice that "washes away all sins." Video and transcript were widely reported; BBC Russian Service and Reuters both cited and translated the relevant passage.