The equation of religion with belief is rather recent.

Religion enabled society to organise itself to debate goodness, just as Greek drama had once done.

Religion is the possibility of the removal of every ground of confidence except confidence in God alone.

Nevertheless, there is another threat on the horizon. I see this threat in environmentalism which is becoming a new dominant ideology, if not a religion. Its main weapon is raising the alarm and predicting the human life endangering climate change based on man-made global warming.

Shelley is truth itself and honour itself notwithstanding his out-of-the-way notions about religion.