Is A Church That Performs Same-Sex Marriage A Christian Church Or A New Sect Based On "Another Gospel"?

Is a church that performs same-sex marriage a Christian church or a new sect? It is beyond argument that to be a Christian is to follow the Gospel, any other church basis is following, as the gospel itself states 

"another Gospel." 

A church based on non-Gospel writing is not, by definition and as St. Paul states vehemently, a Christian church, it may be related to Christianity as an organization but it is a new sect. 

What does the Gospel advise regarding homosexuality, both male and female? Joe Paproki at 

"Busted Halo", a site that describes itself as "an online magazine for spiritual seekers" writes:

"Was St. Paul homophobic? Some people come to that unfortunate conclusion when reading some of his writings about homosexuality such as Romans 1:24-27; 1Corinthians 6:9-10; and1Tim 1:10. 

In particular, it must be noted that, in the Greco-Roman world of which Paul was a part, it was not uncommon for boys or young men to be kept for the purposes of prostitution. When Paul refers to “Sodomites” (1Cor 6:9), he is referring to those adults who used such boys for their own sexual indulgence.

Likewise, Paul’s references to these types of acts must be seen within his more general warnings against any kind of sexual promiscuity. In essence, Paul is warning about any actions that will lead to sexuality becoming idolatrous – i.e. people seeking their ultimate joy and meaning in sexuality per se.

Paul’s references to homosexual acts were not particularly controversial to early Christians who knew that the holiness code of Leviticus forbad homosexual acts (Leviticus 20:13). Paul was merely reaffirming that which was held by faithful Jews and early Christians.

 We have no evidence that there was a movement afoot in Corinth to press for wider acceptance of same-sex activity. Paul does not single out homosexuality but refers to it within a list of other acts that were accepted as idolatrous but were now to be left behind by those who had chosen Jesus. So, although is not homophobic, he is clearly against any form of homosexual activity. 

Based on Scripture, the Catholic Church teaches that “homosexual acts are intrinsically disordered” and “contrary to natural law.” (CCC 2357) At the same time, the Church teaches that people with homosexual tendencies “must be accepted with respect, compassion, and sensitivity” and that any sign of unjust discrimination in their regard should be avoided.” (CCC 2357)

In Romans 1:26/27 Paul states:

"Even their women exchanged natural sexual relations for unnatural ones. 27In the same way the men also abandoned natural relations with women and were inflamed with lust for one another". 

Paul is discussing the state of the world prior to Christ and, as Paproki advises, the Catholic church post Jesus teaches "all must be accepted with respect, compassion and sensitivity" which is my , absolutely non-homophobic view  (I employed a number of Gay men in my career against the wishes of my boss and was amply rewarded with dedication and success)  although I  am not a Catholic.

 

But does that acceptance by the church mean that it has to go to the next step and approve, via a marriage ceremony, those who wish to formalize a same-sex marriage? 

Such an act is clearly a contradiction in terms in relation to the Gospel. It would be utterly against the Gospel to perform such a ceremony, and any religious organization that undertook such a ceremony would not be following the Gospel and thus, clearly, not a Christian organization.

This is the gospel reference to marriage-it is

very clear any departure from it is non-Gospel thus "another Gospel."

 "Have you not read that He who created them from the beginning MADE THEM MALE AND FEMALE, 5and said, 'FOR THIS REASON A MAN SHALL LEAVE HIS FATHER AND MOTHER AND BE JOINED TO HIS WIFE, AND THE TWO SHALL BECOME ONE FLESH '?…

The Catholic Church on the subject:
2357 Homosexuality refers to relations between men or between women who experience an exclusive or predominant sexual attraction toward persons of the same sex. It has taken a great variety of forms through the centuries and in different cultures. Its psychological genesis remains largely unexplained. Basing itself on Sacred Scripture, which presents homosexual acts as acts of grave depravity,¹⁴¹ tradition has always declared that "homosexual acts are intrinsically disordered."¹⁴² They are contrary to the natural law. They close the sexual act to the gift of life. They do not proceed from a genuine affective and sexual complementarity. Under no circumstances can they be approved.


2358 The number of men and women who have deep-seated homosexual tendencies is not negligible. This inclination, which is objectively disordered, constitutes for most of them a trial. They must be accepted with respect, compassion, and sensitivity. Every sign of unjust discrimination in their regard should be avoided. These persons are called to fulfill God's will in their lives and, if they are Christians, to unite to the sacrifice of the Lord's Cross the difficulties they may encounter from their condition. 2359 Homosexual persons are called to chastity. By the virtues of self-mastery that teach them inner freedom, at times by the support of disinterested friendship, by prayer and sacramental grace, they can and should gradually and resolutely approach Christian perfection.

  III. THE LOVE OF HUSBAND AND WIFE 2360 Sexuality is ordered to the conjugal love of man and woman. In marriage the physical intimacy of the spouses becomes a sign and pledge of spiritual communion. Marriage bonds between baptized persons are sanctified by the sacrament.

The further question is does the state have the right to force a church to perform same-sex marriages on the 'anti-discrimination grounds that is forcing e.g. bakers to make cakes for same-sex weddings?
The first amendment to the Constitution seems to indicate it does not:

"The first amendment to the US Constitution states "Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof."

That being the case could e.g. a baker change his business to being a legally registered religious organization and then refuse to bake cakes for whomever he wished?