2- Polygamy

Do not object on the multiple wives of our prophet muhammad (peace be upon him ) because according to your Bible that you believes in it "Solomon the Wise" who is a prophet and a writer of some sanitation of the bible had seven hundred wives of royal birth and three hundred concubines

Kings 1: 11) New International Version)

http://www.biblegateway.com/passage/...11&version=NIV

3 He had seven hundred wives of royal birth and three hundred concubines, and his wives led him astray

David had 29 wives and 40 concubines as mentioned in the bible
(1Sa18:20 ), (Sa 25:42-43), (2Sa 3:2 -5), (2Sa 11:26-27) , (2Sa 5:12-13)

Jacob had three wives and one made

Rehoboam had 18 wives and 60 concubines
Chronicles 2 : 11) New International Version)

http://www.biblegateway.com/passage/...11&version=NIV
21 Rehoboam loved Maacah daughter of Absalom more than any of his other wives and concubines. In all, he had eighteen wives and sixty concubines, twenty-eight sons and sixty daughters.

Abraham had three wives and ten concubines and maybe more
Moses had two wives

So do not object