This topic is not appropriate for this assignment. The primary problem is that your paper is using a narrow religious view to make an argument. Religious views are intensely personal and therefore can’t really be argued in the manner meant in this class. There are also factual errors in this draft—Marriage has meant different things to different cultures in different times. This paper also operates on an assumption that homosexuality is immoral. While you are free to believe this, this is far from the truth and many people disagree with you. Again, you can’t really offer evidence for that kind of claim; the Bible doesn’t work as evidence because it relies on absolute belief on a few passages in the Old Testament.
You will need to pick an issue that you can argue using evidence and reasons that don’t rely on religion. Feel free to ask me any questions about your draft and I look forward to reading your revision soon.