Looking at the number of single Christian women, I suspect a lot of that singleness is resulting from a failure to accept God's provisions of older men (polygamists) as husbands. But right now, I personally wouldn't want most of the single "Christian" women in western countries.The interesting thing about Isaac and Rebekah, is that God arranged that marriage, so if a woman says that she will never marry a man who is twice her age, she very well might be saying "No" to God. Of course, when a woman refuses to marry a polygamist, the same thing can be said.
