It's a pity Herbert never got to writing an official OCB, but given some of the quotes featured in the various Dune books, like:

• Men, finding no answers to the sunnan [the ten thousand religious questions from the Shari-ah] now apply their own reasoning. All men seek to be enlightened. Religion is but the most ancient and honorable way in which men have striven to make sense out of God's universe. Scientists seek the lawfulness of events. It is the task of Religion to fit man into this lawfulness.

and

• Much that was called religion has carried an unconscious attitude of hostility toward life. True religion must teach that life is filled with joys pleasing to the eye of God, that knowledge without action is empty. All men must see that the teaching of religion by rules and rote is largely a hoax. The proper teaching is recognized with ease. You can know it without fail because it awakens within you that sensation which tells you this is something you've always known.

and

• Beware the seeds you sow and the crops you reap. Do not curse God for the punishment you inflict upon yourself.

I could see it fitting right in. And of course since GPT4.5 was almost certainly trained on Dune (along with all other English literature) it wouldn't be surprising if this was some of its "inspiration"