Orthodox worship is designed to be an entry into heaven rather than a service about it: incense, chant, icons on every surface, priests moving behind the iconostasis, most of it sung, much of it long. The tradition's founding story about this is the Rus' envoys reporting from Hagia Sophia that they did not know whether they were on earth or in heaven — which is legend, and which accurately describes what the liturgy is engineered to produce.