What he writes about can apply to most other denominations as well.
Namely, how will churches continue to define marriage as a man and a woman, when the dominant culture says marriage is just any 2 people? Or in the future, sanctions polygamy and group marriage? More liberal members of all denominations will come to accept homosexual marriage as part of the mainstream culture, and perhaps push for it within their churches. They may be voted down, however, this issue has the potential to cause upheaval down the road.
I also want to see if homosexuals start suing churches over the marriage issue. Having gotten civil marriage rights, will they then continue their lawsuits, this time to force religions to accept homosexual marriage, or else lose the right to perform marriages at all, or lost tax exempt status due to “discrimination”. We don’t know if the LGBT peoples will let it go, or continue to steamroller this issue through courts, this time with the target all of organized religion.
“Namely, how will churches continue to define marriage as a man and a woman, when the dominant culture says marriage is just any 2 people”.
The Catholic Church does not change it’s doctrine on what’s the “dominate culture”. The Catholic Church safeguards the truth. Marriage is a sacramental union of a man and woman, so says God. That is not changing. At least in the Catholic Church.
The acceptance of any kind of homosexual behavior—much more the abomination of sodomy-marriage—has been and is increasingly defining the lines between true and apostate Christianity.
Conservative denominations like the LCMS must develop and have clear disciplinary actions for pastors or seminary professors—or even lay church teachers—that will excommunicate those who teach that homosexual behavior or “marriage” is acceptable.
One of the big separators between evangelical & orthodox Christians of all kinds from the liberals used to be the issue of homosexuality...now a few so-called evangelicals and emergents have rolled over and are going with the enormous flow of culture... Such persons who cling to sinful teaching must be rejected and removed from our fellowships like cancer.
The early Church did this with all kinds of false teachers; we cannot be afraid to excommunicate false teachers today—for the love of Christ and His Body.