Let's make proper assumptions, lest we get off on the wrong foot. 

First of all, the Church is not essentially a non-profit institution. That is only a secondary categorization, for the purpose of organization vis a vis the government and its rules for incorporation and taxation. The Church is essentially the Bride of Christ who enjoys mystical union with him -- a metaphysical reality that is reflected, however hazily, in the sacrament of marriage. Even if you are talking about the legal organization of the "Church", you need to make clear which Church (denomination, parish, etc.) you are referring to, and you need to cite the wording of such articles or by-laws that bind it.

The nasty word "discrimination" did not always have a negative connotation. It used to be a common understanding that a "discriminating customer" was one who knew the value of fine products and was commended for his/her good taste. Homosexual "marriage" is not a fine product, but rather a cheap counterfeit.