Read the declarationif you have a chance.
For starters, my beef with it certainly isn't the same as Pastor John MacArthur's...and I actually disagree with some parts of it that Scot McKnight likes.
*Begin Rant*
My main beef is around the idea of marriage being between a man and a woman. I've worked in the real world long enough to see gay and lesbian people who do not appear to have "chosen" their "lifestyle". I did say real world ... because sometimes I think that Christians live in their own communities and never venture out meeting others different than themselves. I've met and befriended through work or mission trips several in their 50s and 60's. The 60 year old who I have worked with told me about being ostracized by his entire family many years ago. Yeah, that was easy I'm sure. Well, good thing he only "tried" gay for a few years and then went back. No, wait a minute. He's still gay. My belief is they were born that way, that they should be allowed to have a loving relationship with all the legal benefits that normal marriage grants. I believe it is discriminatory otherwise.
Having said that, I'll elaborate on another point that I think is a confusing proposition in the declaration.
Marriage is what one man and one woman establish when, forsaking all others and pledging lifelong commitment, they found a sharing of life at every level of being—the biological, the emotional, the dispositional, the rational, the spiritual— on a commitment that is sealed, completed and actualized by loving sexual intercourse in which the spouses become one flesh, not in some merely metaphorical sense, but by fulfilling together the behavioral conditions of procreation. That is why in the Christian tradition, and historically in Western law, consummated marriages are not dissoluble or annullable on the ground of infertility, even though the nature of the marital relationship is shaped and structured by its intrinsic orientation to the great good of procreation.
It seems (unless I misread it) that the declarers want to have their cake and eat it to. They say marriage is for procreation. But they also say if you're infertile you can't get divorced. Balderdash man! Let's keep it simple here. If a straight married couple is unable to have kids, what's the difference between them and a gay or lesbian couple?
Elements of the Church have a lot of work to go yet in getting over this abhorrence of gay couples...who...it seems to me were created by the same God who created infertile couples.
*Rant over*