Although what you say is true, you miss an important point.
Government has encroached on the religious institution of ‘marriage’ for the purpose of ensuring contractual obligations to children and to avoid health defects (blood types). But government always stopped at the water’s edge of religious rights under the 1st Amendment until now when 14th Amendment considerations have turned the intent of that amendment to encompass same sex marriage.
The encroachment is now upon the Church; that’s the point you need to accept. You may not like it but it is what it is.
To stop the encroachment and its attack on the Church requires not only a clear definition of terms but a definition that is carved into the Constitution in the form of a Marriage Amendment with protective clauses that bar other Amendments from weakening it.
I support such an Amendment, even though in a sane world one would not be needed.
And yet, the courts are still not redefining the institution of marriage. It is impossible for them to do so, because God defined it, from the very beginning of the creation. All they are doing, in fact, is destroying their own credibility and the foundations of the institutions they represent. They are not defenders of fairness, justice and equality, as they would have you believe. No. They are destroyers, of themselves and anyone who is foolish enough to go along with them.