The civil magistrate may not assume to himself the administration of the Word and sacraments, or the power of the keys of the kingdom of heaven: yet he hath authority, and it is his duty, to take order, that unity and peace be preserved in the Church, that the truth of God be kept pure and entire; that all blasphemies and heresies be suppressed; all corruptions and abuses in worship and discipline prevented or reformed; and all the ordinances of God duly settled, administered, and observed. For the better effecting whereof, he hath power to call synods, to be present at them, and to provide that whatsoever is transacted in them be according to the mind of God.
I have read the above-quoted portion of the Westminster Confession many, many times, but it was only recently that a particular phrase of it stood out to me, a phrase that briefly states an idea that I think is of enormous importance for the ideal of church unity. In describing the duties of the civil magistrate relating to religion, the Confession notes that it is the civil magistrate's duty "to take order, that unity and peace be preserved in the church." Particularly, I am now interested in the idea that part of the role of the civil magistrate is to help preserve "unity" in the church of Christ.
WHAT IS THE ESTABLISHMENT PRINCIPLE?
1. The civil magistrate is not neutral in religious matters. This non-neutrality is both a logical necessity and a moral imperative. The civil magistrate is in the business of making and enforcing civil laws and public policies. In order to do this, he (or they--I'll use the singular pronoun for shorthand while recognizing the diversity of forms civil government can take) must have in mind ideals as to how society should function, a hierarchy of valuable ends that are worth pursuing, beliefs about what is right and wrong and good and bad, a perspective on what the purpose of civil government is and thus what tasks he should be about, and so on. But all of these ideals, beliefs, values, etc., are dependent upon which worldview is actually true. If Agnosticism or Atheism is the worldview through which we should view the world, this will lead to a particular set of ideals, values, and beliefs. If Islam is the correct worldview, this will lead to a quite different set of values and beliefs. If Reformed Christianity is true, this will lead to yet another distinct set of beliefs and values.
Granting that this is the case, it is evident to the mind of man, whether illuminated by special revelation or not, that civil governments ought to base their laws and policies not on falsehood but on reality. It would be absurd to hold that while it is good for individuals to base their lives on reality, it is perfectly reasonable and harmless for entire societies to be grounded in fundamentally false views about the nature of the universe. This is why Atheists and Agnostics are so bent on bringing about a fully secular society. A secular society is a society that assumes that we have no knowledge of the supernatural but only of the natural world. Secularists like to present secularism as a neutral point of view upon which government can be based, but of course it is not neutral at all--it is the political instantiation of Agnosticism or Atheism. How foolish, then, is it for Christians to advocate for a secular society! Can we imagine Atheists advocating for a Christian or an Islamic theocracy? Of course not. And yet we see Christians all too often advocating for an Agnostocracy or an Atheocracy (though they don't put it so bluntly).
Both Christian common-sense, then, as well as the Bible, leads us to conclude that the civil government should not be secular but should be explicitly, officially Christian. The civil magistrate should acknowledge and establish the true Christian religion and base his laws and policies on that truth. We see this idea put forward, among many other places in Scripture, in Romans 13:1-7:
Let every soul be subject unto the higher powers. For there is no power but of God: the powers that be are ordained of God. Whosoever therefore resisteth the power, resisteth the ordinance of God: and they that resist shall receive to themselves damnation. For rulers are not a terror to good works, but to the evil. Wilt thou then not be afraid of the power? do that which is good, and thou shalt have praise of the same: For he is the minister of God to thee for good. But if thou do that which is evil, be afraid; for he beareth not the sword in vain: for he is the minister of God, a revenger to execute wrath upon him that doeth evil. Wherefore ye must needs be subject, not only for wrath, but also for conscience sake. For for this cause pay ye tribute also: for they are God's ministers, attending continually upon this very thing. Render therefore to all their dues: tribute to whom tribute is due; custom to whom custom; fear to whom fear; honour to whom honour.The Westminster Confession summarizes this teaching in this way:
God, the supreme Lord and King of all the world, has ordained civil magistrates, to be, under Him, over the people, for His own glory, and the public good: and, to this end, has armed them with the power of the sword, for the defense and encouragement of them that are good, and for the punishment of evil doers. (WCF 23:1)
The civil magistrate is the "minister of God", whose job it is to keep the public sphere clear of evil and safe for the good as much as possible, judging good and bad and learning the rules and methods of his governing from the revelation of God.
Note also that these biblical principles do not lead to the conclusion that the civil magistrate should acknowledge and ground his laws in only some portion of God's revealed truth while neglecting other parts of it. The established religion should not be merely a lowest-common-denominator, watered-down form of Christianity, but it should embrace the fullness of the the whole counsel of God. Just as the individual, and the family, and the church, has no right to ignore any portion of God's Word, so the civil magistrate must also acknowledge all of it. The church ought not to be simply "Christian" in a lowest-common-denominator sort of way, but it should have a confession that is distinctly Reformed and Presbyterian (because the Reformed faith, summarized in the Westminster Standards, is the full and purest expression of biblical Christianity). Similarly, it is not just a watered-down Christianity that should be embraced by the civil magistrate and by the entire society, but true, biblical, Reformed Christianity.
2. The civil magistrate should not only acknowledge and establish the true religion in an abstract sense, but he should formally recognize the official rulers of the church. It is not enough for Christians and for churches to acknowledge some abstract concept of "proper biblical civil governance." We must fully and formally recognize the specific civil government that is set over us and the specific rulers who have formal rule over us in the civil sphere. To put it more specifically, as an American, I cannot simply acknowledge the abstract principles of biblical civil government; I must also formally acknowledge my allegiance to the particular civil government set over me by the providence of God--the federal government of the United States of America, the government of the State of Utah, and the government of the City of Orem. I must recognize and show proper respect and deference to all those who are formally recognized to have an official role in the functioning of these legitimate governments. If I do not like the current president of the United States, I cannot simply ignore him and decide to set up my own president. This would be rebellion against those who have lawful rule over me.
In the same way, the civil magistrate has an obligation not just to acknowledge in the abstract the doctrines of the true religion; he must also formally, explicitly, and officially recognize as established the true church of God. He must formally acknowledge and recognize the sessions, presbyteries, synods, and national assembly of the true church of Christ in his nation. He must recognize the formally-appointed officers who make up these ecclesiastical governing bodies.
The ideal the Establishment Principle points to is a situation where the society as a whole embraces a formal recognition of all of the leaders God has appointed over the people--both civil and ecclesiastical (and parental). The society of the United States of America, for example, ought to acknowledge both an official body of civil governance and an official body of ecclesiastical governance, which bodies mutually and formally acknowledge each other and support each other in their distinct spheres of jurisdiction and activity. Here in America, this concept is extremely foreign, as we have never had an officially-recognized established church. In Scotland, on the other hand, this situation is at least in principle familiar (if not currently functioning in the best of conditions, to put it mildly).
---------------------
[Ed.]
Some Scripture Proofs of the Establishment Principle
2 Chron 15:12 And they entered into a covenant to seek the Lord God of their fathers with all their heart and with all their soul; 13 That whosoever would not seek the Lord God of Israel should be put to death, whether small or great, whether man or woman.
2 Chron 19:8 Moreover in Jerusalem did Jehoshaphat set of the Levites, and of the priests, and of the chief of the fathers of Israel, for the judgment of the Lord, and for controversies, when they returned to Jerusalem. 9 And he charged them, saying, Thus shall ye do in the fear of the Lord, faithfully, and with a perfect heart. 10 And what cause soever shall come to you of your brethren that dwell in their cities, between blood and blood, between law and commandment, statutes and judgments, ye shall even warn them that they trespass not against the Lord, and so wrath come upon you, and upon your brethren: this do, and ye shall not trespass. 11 And, behold, Amariah the chief priest is over you in all matters of the Lord; and Zebadiah the son of Ishmael, the ruler of the house of Judah, for all the king's matters: also the Levites shall be officers before you. Deal courageously, and the Lord shall be with the good. (2 Chron 29-30)
Ezra 7:23 Whatsoever is commanded by the God of heaven, let it be diligently done for the house of the God of heaven: for why should there be wrath against the realm of the king and his sons? 25 And thou, Ezra, after the wisdom of thy God, that is in thine hand, set magistrates and judges, which may judge all the people that are beyond the river, all such as know the laws of thy God; and teach ye them that know them not. 26 And whosoever will not do the law of thy God, and the law of the king, let judgment be executed speedily upon him, whether it be unto death, or to banishment, or to confiscation of goods, or to imprisonment. 27 Blessed be the Lord God of our fathers, which hath put such a thing as this in the king's heart, to beautify the house of the Lord which is in Jerusalem: 28 And hath extended mercy unto me before the king, and his counsellers, and before all the king's mighty princes. And I was strengthened as the hand of the Lord my God was upon me, and I gathered together out of Israel chief men to go up with me.
Ps. 2:10-12 Be wise now therefore, O ye kings: be instructed, ye judges of the earth. Serve the LORD with fear, and rejoice with trembling. Kiss the Son, lest he be angry, and ye perish from the way, when his wrath is kindled but a little. Blessed are all they that put their trust in him.
Ps. 9:17 The wicked shall be turned into hell, and all the nations that forget God.
Ps.22:27-28 All the ends of the world shall remember and turn unto the LORD: and all the kindreds of the nations shall worship before thee. For the kingdom is the LORD'S: and he is the governor among the nations.
Ps. 33:12 Blessed is the nation whose God is the LORD; and the people whom he hath chosen for his own inheritance.
Isa. 49:23 And kings shall be thy nursing fathers, and their queens thy nursing mothers: they shall bow down to thee with their face toward the earth, and lick up the dust of thy feet; and thou shalt know that I am the LORD: for they shall not be ashamed that wait for me.
Isa. 60:12 For the nation and kingdom that will not serve thee shall perish; yea, those nations shall be utterly wasted.
Rom. 13:3-4 For rulers are not a terror to good works, but to the evil. Wilt thou then not be afraid of the power? do that which is good, and thou shalt have praise of the same: For he is the minister of God to thee for good. But if thou do that which is evil, be afraid; for he beareth not the sword in vain: for he is the minister of God, a revenger to execute wrath upon him that doeth evil.
1 Tim. 2.1-2 I exhort therefore, that, first of all, supplications, prayers, intercessions, and giving of thanks, be made for all men; For kings, and for all that are in authority; that we may lead a quiet and peaceable life in all godliness and honesty.
Revelation 1:5 And from Jesus Christ, [who is] the faithful witness, [and] the first begotten of the dead, and the prince of the kings of the earth.
Rev. 19:16 And he hath on his vesture and on his thigh a name written, KING OF KINGS, AND LORD OF LORDS.
Rev. 21:24, 26 And the nations of them which are saved shall walk in the light of it: and the kings of the earth do bring their glory and honour into it. And they shall bring the glory and honour of the nations into it.