It is not difficult to understand that in order to “Be fruitful and multiply”, that is, to bear children, you have to have a male and female to propagate the human family. This is God’s design. This is a very strong argument against a man marrying a man or a woman marrying a woman. Such a ‘marriage’ would be in opposition to and against God’s design for an acceptable marriage.
Jesus Christ, the Son of God, gave credence to the record of creation and the beginning of the human race as found in the first two chapters of Genesis. In Matthew 19:4-6, He was answering a question raised by the Pharisees and here was his answer: “Have you not read that He who made them at the beginning ‘made them male and female,’ “and said, ‘For this reason a man shall leave his father and mother and be joined to his wife, and the two shall become one flesh’? “So then, they are no longer two but one flesh. Therefore what God has joined together, let not man separate.” If we believe in Jesus Christ we must also accept as literal the record of creation recorded in Genesis. And it is obvious that the “wife” (Eve) of the “male” (Adam) was a “female”.