“Polygamy is REFERENCED in the Bible, but NEVER condoned.”
It is only condemned for pastors and then not terribly strongly.
My copy of the Christian Scriptures strongly condemns adultery throughout. The only condoned sexual conduct that I have found in that document is either "single and celebrate" or "married and faithful."
And in a recent article posted on FR someone who supports queers marrying one another said:
"I think Jesus' commandment that we love our neighbor trumps everything else. We are to love God with all our heart, soul, mind and strength and our neighbor as ourselves. There is no modification to say 'except the neighbor whose lifestyle you disagree with,' " he said.
You can make up whatever you like and find some way to have Scripture agree with your preconception whether it's polygamy or queers marrying. If "not terribly strongly" is a part of your criteria, then you can't complain about the people who rationalize everything from the Armenian genocide to the use of Zyklon B gas on the Jews.