“and the two shall become one flesh” For this reason a man shall leave his father and mother, and be joined to his wife; and they shall become one flesh. “Well, what’s difficult about this passage? Doesn’t it say that two people shall be joined together and shall have sex?” Well, no, on several counts. First, it says a man and a wife are joined together, not merely two people. There are those who try to call a same sex relationship a marriage. That simply doesn’t fit the biblical model.