"It is unbelievable that there are those who say Polygamy isn’t refuted in the Bible and even more surprising that they would say slavery isn’t condemned."
What is actually unbelievable is that you cling to the notion that the Bible condemns slavery yet produce no scripture to prove your assertion.
Google “Bible Condemns Slavery” and just peruse the many scholars both Christian and Jewish who since the mid 1700s have waxed on this and found zip to prove your assertion. Some of you may take liberty and claim “implied condemnation” but slavery is hardly ambiguous and one would think given that the Bible was written at time when slavery was universally practiced that if the writers of the Bible wanted to condemn it that they would have done so in certain terms.