基督教有没有规定其教徒必须结婚呢？

No, every christian has the right to choose whether like to marry or not. There is no compulsory law in bible to tell us we need to marry or keep singleness. For detail advices, we can find from Bible Chapter 7 of 1 Corinthians. Of course, the writer Paul was a singleness.

没有规定架
當然可以保持單身\
係天主教先話一定要結婚姐ma