Faith is not something that is unchanging. It is steeped in time. It was revealed, and developed in a specific time. Time affects faith. If you want to pass it on to others in the future, you need to make it relevant to the changing time. If you did not care for future generations to know about faith, than it could fossilize. People nowadays memorize a creed but I doubt it changes them for the better because of it. Faith has to adapt to each and every age. The similes and examples that you use to compare and contrast have to be modern, up to date to explain a faith. Institutional Churches have to adjust to the modern mentality. Holding on to the past as past being the norm, is what museums do. It teaches you something about the past, but how does that change one for the better. Look at Alcoholics Anonymous. It was founded in 1935. It was all male, all white collar, most all with baptism, and only about alcohol. Had AA not changed, it would be dead today, or a museum piece, small and quaint nod to a long gone past. There are a few people who would like their churches to be old fashioned, with lots of Latin and chant. So be it, but you won’t get a lot of moderns going for that. All returns to the past satisfy a small number. If you want a small group of like-minded people don’t change.