There’s an interesting passage in Eph. 5:28-32:
So husbands ought also to love their own wives as their own bodies. He who loves his own wife loves himself; for no one ever hated his own flesh, but nourishes and cherishes it, just as Christ also does the church, because we are members of His body. For this reason a man shall leave his father and mother and shall be joined to his wife, and the two shall become one flesh. This mystery is great; but I am speaking with reference to Christ and the church.
Many a Christian sermon on marriage will tell you that there’s a great mystery (i.e. a great truth that can only be understood through divine revelation) behind the physical union of a man and a woman in sexual intercourse, and that mystery is that the sexual union is really only a shadow of a deeper truth about the spiritual union of God and man. The true essence of the sexual relationship is thus not its carnal aspect, but its spiritual nature.
That becomes interesting when you remember that the Trinity is an even deeper union, not just of two persons, but of three—all male.
Think about it: each member of the Godhead is male. Maleness is a sexual role, i.e. a role that exists with reference to a sexual relationship with some kind. An old argument in favor of the Trinity is that God must be a plural Godhead, because the Bible says God is love, and love demands an object. Thus, a God who is love must be a Trinity so that the Father can love the Son and the Son can love the Spirit and so on. So when we say that God is also a sexual being, that also has the same implications concerning someone else who must exist for Him to be in a sexual relationship with. And the only other persons who have also existed for always and eternity are the other members of the Trinity, who are also male. That makes God’s eternal sexual nature one that exists and is defined by a purely homosexual context.
You could argue, of course, that this doesn’t mean there’s any anal intercourse involved, but that would completely miss the point of Ephesians 5. The sacredness of sex, according to Scripture, comes from the fact that it draws on the underlying spiritual union of God and man—the physical aspects are a mere shadow of a deeper spiritual reality. And the spiritual homosexual relationship that unites the members of the Trinity is an even deeper and more intimate union, joining them not merely as one flesh, but as one God—homosexually.
There’s really only one way out of this, as far as I can see, and that’s to admit that God’s maleness is not something divinely revealed, but is merely a leftover vestige of His early days as just one god out of a whole pantheon of male and female gods. Ages ago, when people were inventing gods to explain the world around them, they invented gods who looked like themselves, and the fact that one of them was subsequently promoted to the rank of One True God didn’t change His origin or the shape He was originally imagined in. And likewise, the homosexual nature of the Trinity was similarly accidental, arising out of the conflicting goals of monotheism and Jesus worship—a meaningless fiction that we shouldn’t give too much heed to.
But if you’re not going to go that route, I’m afraid you’re pretty much stuck with a Godhead built on an eternal same-sex union. Then again maybe that’s why there’s no marriage in heaven, eh?