The whole issue of same sex marriage is not whether homosexuals have the right to marry but about what constitutes a marriage. Throughout history marriage has always been a relationship between a man and a woman. This concept is no limited to any specific religion or culture but has until recently been universally accepted.
His invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So they are without excuse.
Romans 1:20 ESV
Romans 1:20 ESV