Ever since the beginning of creation, God made man and woman to reproduce and create humanity. God never in between allowed or said that same sex marriage was permissible or was the natural way to create a generation. For example in Genesis chapter 19 the story of Sodom and Gomorrah explained the wickedness of the city that mainly strived from homosexuality. Genesis 19:5- And they called unto Lot, and said unto him, Where are the men which came in to thee this night? Bring them out unto us that we may know them. The city 's perverseness made God infuriated and led to the destruction of that city turning it into fire and brimstone. This gives evidence that homosexuality is a religious sin, which is analogous to many other Biblical prohibitions, like committing adultery which transgresses ethics.
According to the Bible, Deuteronomy 32:46- And he said unto them, Set your hearts unto all the words which I testify among you this day, which ye shall command your children to observe to do, all the words of this law. It is impossible to raise children when both parents are the same sex because it isn 't natural and goes against biblical standards. In addition, children won 't have the example from their parents to do different than they do and make better decisions that please God.
Some issues that are argued on the topic of gay parenting is that gay parenting is no different
Cited: Christian Science Moniter. 2004. Staff of Christian Science Moniter. 10 October 2004