"The cultural traditions of the Bible are radically different than today’s social norms" - You are looking at this from a slightly incorrect angle. Today’s social norms are what the Bible calls "commandments of men" they are not based on absolute principles Jesus and his apostles thaught. It's the same with the cultural traditions of old. We always have to distinguish between what God wants from his creation - and what humanism wants from creation. The first is expressed in the commandments of Jesus, the other you can find here for example: Matthew 15:9 But in vain they do worship me, teaching for doctrines the commandments of men. // See also Mark 7:7 & Titus 1:14. So in summery I would conclude human traditions are relative, always change with time, God's will is absolute and not influenced by any human tradition. So when you look at these things you mention like: gender roles, gay marriage, abortion, who do you consider an authority on these topics? You have a choice between God and human preference, tradition and philosophy.