God the Father does not change. What he views as an abomination back in the Old Testament applies to this day and Age as well. The other fact of the matter is, who invented marriage? God of course. He married Adam and Eve. So the institution of Marriage belongs to God. He set up the ideal Family Unit in marriage. Gay marriage is a perversion of this institution. It is an affront to God and an insult meant for him. Do not be fooled, ask yourself why would a gay who denies God's authority and law over their life want to have an institution invented by God set over them? The answer is they don't. They just want to bring this institution down and pervert it in front of the Living God and to insult him because they believe they will never have to answer to him some day.