How can you explain the decline in the social significance of the clergy in the 18th century?

The great role of the clergy was, first of all, associated with the religious consciousness of society. People perceived the priest as a mediator between God and mortals, so they listened to the opinion of church officials and tried to win their favor. As a result, the clergy actively influenced social life and public opinion. However, by the 18th century, people’s worldview had changed. Religion has ceased to play such a big role, life has become more secular and free. Therefore, the importance of the clergy to society has also decreased.