What you guys running here?

 I copy pasted the words of Genesis chapter 16. The word wife is very much there. If you open a few other bibles (KJV etc) you will find it there. Your post is funny. See below:

 I am still wondering what you mean by unitarian? Abraham believed in the God of the Jews and Christians the single God.

 You do not understand Unitarian. Then you may not be aware of the Trinitarians too. Abraham did not believe in the God of the Jews and christians. The Jews and christains may have believed in the God of Abraham. There were no Jews or christians at the time of Abraham.

Hagar and Sarah

 24These things may be taken figuratively, for the women represent two covenants. One covenant is from Mount Sinai and bears children who are to be slaves: This is Hagar. 25Now Hagar stands for Mount Sinai in Arabia and corresponds to the present city of Jerusalem, because she is in slavery with her children. 26But the Jerusalem that is above is free, and she is our mother. 27For it is written:
   "Be glad, O barren woman,
      who bears no children;
   break forth and cry aloud,
      you who have no labor pains;
   because more are the children of the desolate woman
      than of her who has a husband."^[b]

 28Now you, brothers, like Isaac, are children of promise. 29At that time the son born in the ordinary way persecuted the son born by the power of the Spirit. It is the same now. 30But what does the Scripture say? "Get rid of the slave woman and her son, for the slave woman's son will never share in the inheritance with the free woman's son."^[c] 31Therefore, brothers, we are not children of the slave woman, but of the free woman.

And he forgot the Israelites were of Egyptians' real slaves down the road but the Ishmaelites were never slaves but turned pagans when he is discussing the subject

The whole lot of them had to become slaves for many years in Egypt because some one called the honorable Egyptian lady as slave girl.

Brother thanks for bringing this interesting piece up about Bibi Hajira.

It was a custom, an established social norm, of that day to gift the best possible to our guests. There was nothing sinister or low about gifting a woman to any man, anywhere, in that era of our history.

Hajira was the Paharao's sister.

Hazrat Ibraheem had taken "horses" to Egypt - these were never seen by the Egyptians before. Not just for this, but also in the overall sense, el Pharao was just simply taken in by Ibraheem. As ze Amrecanos would say; PERIOD!

He gifted his sister to Ibraheem.

Please don't waste any time on this chap. All his measurements are as dodgy as his story about the Kaaba walls and some pretty little Miss Barbi Goat jumping over these happily as if with some magic!!

 He has failed to do a good work. He had gone on wrong track from the beginning. We have given him the right replies to his wrong allegations. Still does not understand and finds the things becoming difficult now. This is a mere discussion forum.

 As whisper said, I had also known that Hajirah (Hagar) was a princess from Egypt. In any case she was the mother of 12 princes who are named in the bible OT. The children of those princes are spread all over Arabia now.