Do Religious Beliefs Evolve Over Time?

 In a recent NPR article, "Some Faith Leaders Call Equality Act Devastating; For Others, It's God's Will", reporter Tom Gjelten makes the following assertion, 

"... one lesson of history is that religious beliefs evolve in response to changing cultural attitudes. The transformation, in part, reflects altered interpretations of scripture and tradition. Theological discussions around issues of marriage and sexuality reflect this trend."

I don't know which history book he has been reading, but it doesn't sound like the Bible. 

He then quotes Episcopal bishop Gene Robinson to get some Biblical support for the idea that religious beliefs evolve in response to culture,

"Retired Episcopal Bishop Gene Robinson, the first openly gay bishop in the Episcopal Church, likes to quote a story from the biblical account of the Last Supper.

In Robinson's telling, Jesus says to his disciples, 'There is much that I would teach you, but you cannot bear it right now. So I will send the Holy Spirit, who will lead you into all truth.' And the question I always ask my brothers and sisters in the conservative denominations, Robinson says, is, 'Could it be that God is leading us into a deeper truth about gay and lesbian, bisexual, transgender people?' "

While he is an expert in leading the church to follow the culture, Bishop Robinson ignores the alternate possibility that a different spirit might be leading us, and leading us astray. 

Having quoted such an esteemed authority, Gjelten doubles down on his claim,

"Given that religious beliefs do change over time, that evolution may be more important than new legislation for the promotion of LGBTQ rights."

Gjelten did not ask anyone to offer a counter argument to his assertion, so I will open the comment section for others to point out problems with the "Religious Beliefs Evolve Hypothesis" from a Christian perspective.

I have one brief observation. We have the Gospels and the Creeds, and these have not evolved over the centuries. Different interpretations come and go, but the core beliefs that Jesus is Lord, that he died for our sins, and that all who believe in Him will have eternal life do not evolve. Our many sins are also detailed in the Bible, and that has not changed. Those sins do not evolve into blessings as the Vatican recently pointed out. Such a change would, in evolutionary terms, be considered a lethal mutation, or as I see it, the devolution of belief. 

Certain novel beliefs are, like Bishop Robinson, evolutionary dead ends.