This address is about sex, politics and religion. Please note the plural “beliefs” is used in the title and might cause some Christians to protest. They might argue that Christian sexual standards never change because they were revealed by God long ago, and “God is the same, yesterday, to-day and forever”. People however, grow and change, and so do their beliefs, both within each lifetime and in each new generation. Different attitudes towards sex are evident even in the New Testament and differences continued in sub-apostolic times,- and indeed, ever since. So the debate about Christian sexual standards to-day is nothing new !
This is a lecture given by Anglican Bishop John Bothwell. It's a long read but very informative, right up to some surprising information pertaining to same-sex marriage, which is near the end of the lecture.