What Christ has brought about by His Incarnation, we experience sacramentally in the Divine Liturgy: He who is and who was reveals to us Him who is to come (cf. Rev. 4:8), since the Liturgy provides the possibility for all rational creatures to experience ‘the ineffable mystery of eternal well-being’ together with Christ.

“The Divine Liturgy – A Commentary in the Light of the Fathers” by Hieromonk Gregorios
Quotations from St. Maximus the Confessor