Both Augustine and the English Reformers knew self-denial was the only way to ascend to God.
At a basic level, good liturgy is an insurance policy against bad preaching.
The Reformers were concerned not only with theology but also with its expression in worship – both its structure and content.
In the third book of his Institutes, John Calvin argues that the church’s worship should begin with a corporate prayer of confession:
“Besides the fact that ordinary confession has been commended by the Lord’s mouth, no one of sound mind, who weighs its usefulness, can dare disapprove it….