I was reading a book that had some paragraphs discussing marriage in this life, and how it carries over into the resurrected life. The argument was that there would be no married people when the Christians are resurrected, and pulled from the example of Jesus saying that the woman who had the seven husbands would not be the wife of any of them in the life to come, for people are neither married nor given in marriage.
Then it made the mention that above all else, a Christian husband and a Christian wife are a brother and sister in Christ. Which, if I take to the literal extreme ... means that a brother and a sister have married.
It was a rather odd moment for me.