Polygamy in the Bible

Aquila, just wanted to thank you for keeping this debate civil and sticking to plain scripture.

From reading both sides, there is not one verse that plainly condemns Polygamy. The laws were very specific about so many scenarios.. how in the world can someone call it a sin when it is not among the many God given laws? You think they just forgot to put it in?

Can anyone provide any scripture condemning polygamy as a sin? I see multiple instances where it is practiced and God acknowledges the practice, yet no condemnation.

Also, I know adultery in the bible means 'woman that breaketh wedlock' (I looked up the biblical/Hebrew definition). So how is it 'cheating' if a man is in wedlock with more than one woman as Abraham and so many were? Again why wasn't this fairly common practice condemned if it is sin?