Much disdain has been directed to the argument against homosexuality from the Creation account. I agree that the way the argument is sometimes formulated is unsophisticated. However, there is truth behind this argument.
The original creation should not be dismissed when discussing homosexuality. The facts are clear. God created both the human race and the other creatures male and female. This creation of male and female was followed by the command to be fruitful and multiply. This assumed heterosexual relationships (Gen_1:26-28).
When the creation of woman is expanded in chapter 2, we are presented with woman being man’s ideal counterpart. Adam was lonely and wanted someone suitable for him. God created woman, not another man, to meet this need.
Moses, through the inspiration of the Spirit, provides further commentary on the situation. He states that because of God’s original creation that a man should leave his father and mother and cleave to his wife. Notice, again, how a heterosexual relationship is assumed. Father and mother shows marriage and sexual relationships are between a man and a woman. The man leaving his parents to become one flesh with his wife is once again a heterosexual relationship.
If we were looking at the original creation as our pattern for human sexuality, the answer is clear.
Now some will say that we should not look at Genesis 1 and 2 as a model of human sexuality. I disagree with this assessment. Here is why. When Jesus was asked about divorce in Matthew 19, he took his answer from the creation narrative. He stated that in the beginning God created them “male and female” and for this reason “a man should leave his mother and father and cleave to his wife.” Jesus recognized, and argued, that creation serves as the model for human sexuality.
Thus, today when asked the question of homosexuality, there is nothing wrong with the argument that in the beginning God created them male and female. The creation narrative lays out for us a pattern for human sexuality and the pattern is heterosexual.