It is my opinion that the main reason State does not intefere with the politics of the church is because you have pledged your allegiance to the organization as your superior governing authority. One sovereign does not intefere with the subjects of another sovereign.
The sovereignty of the organization goes back to the catholic church.
JUDICIAL POWER OF THE CHURCH
In instituting the Church as a perfect society, distinct from the civil power and entirely independent of it, Christ gave her legislative, judicial, and executive power to be exercised over her members without any interference on the part of civil society. It does not fall within our scope to prove that the Church is a perfect society, consequently endowed with the above-mentioned power. If one admits the Divine institution of the Church, and the authenticity and authority of the Gospels, he must acknowledge that Christ so constituted His Church as to enable her rulers to make laws and regulations for the faithful conducive to the attainment of eternal happiness.
It is evident, therefore, that Christ in conferring legislative power upon the Church also gave judicial and coercive power. In proof of this we have, besides theological arguments, the practice of the Church which explicitly claimed such power, as well in the beginning (2 Corinthians 10:8; 13:2 sqq., etc.) as during the subsequent centuries of her existence; and, moreover, made frequent use of it. Suffice it to recall the institution of canonical penances, the constitutions and laws of so many pontiffs and councils, containing not only positive enactments, but also sanctions to be incurred ipso facto by the rebellious and obstinate, or to be inflicted upon them at the discretion of ecclesiastical superiors. Now the infliction of punishment certainly presupposes evidence of the crime, since, according to the natural law, no one should be condemned until his guilt has been established. Hence the Church, in making use of her powers of legislation and coercion, must have also exercised judicial power. It is, moreover, historically evident that the Church often exercised these powers either through the Roman pontiff alone, by the agency of his delegates, or through councils, individual bishops, or other judges, ordinary or delegated.
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oh, and the scriptures about not taking your brother to court?.....
This was in accordance with the grave admonition of St. Paul (1 Corinthians 6:1), who urged the faithful not to appear as litigants before the civil courts. Though in such cases the bishops often assumed the rĂ´le of friendly arbiters rather than strict judges, we should not infer that they never conducted a strict trial.
i.e. the Church is wont to warn and punish, is a Divinely appointed censor, whose weighty decisions are accepted as rendered in the presence of God. Many similar utterances from the Fathers and the councils could easily be cited. It was, of course, impossible for the ecclesiastical magistrates (the bishops) to make use at that time of the legal solemnities introduced at a later period. Though rather summary, the judicial proceedings of the primitive episcopal tribunals were trials in the strict sense of the word.
When the Christians obtained control of the civil power of Rome, the reasons that moved St. Paul to persuade or command the faithful to avoid the civil tribunals were, of course, no longer pertinent. Gradually the Church allowed the faithful to submit their differences either to ecclesiastical or to civil tribunals. From the beginning of the new era the bishops shared with the secular magistrates the power of settling the disputes of the faithful.
http://www.newadvent.org/cathen/04447a.htm
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perhaps you can see more clearly that WT as well as all other cults and religions have an origin in Rome.