My friend Kathy Baldock, an Evangelical Christian, did a tremendous job in her book Walking the Bridgeless Canyon of explaining the historical, cultural, medical, political and theological factors that have shaped how our society (and especially the church) came to view people who are LGBTQ.

Since the book's release (and 5 star reviews on Amazon) she has been giving workshops called Untangling the Mess which present the book's material in a timeline format. She has just made available for free a compressed 90 minute version of her presentation on video. I highly recommend it.