The most common form in which the liturgy is celebrated in the Eastern Church is that laid out by St John Chrysostom. While its contents are essentially the same, its form and spiritual climate are very different from those of the Roman liturgy. The believer taking part in these mystical events feels himself transported into another world. It is almost impossible for the listener to avoid being gripped by the stirring exhortation to prayer and meditation that is emitted by the almost supernatural power of this ancient liturgy.