This presentation attempts to contribute to the Orthodox-Pentecostal dialogue by looking at the decisive role of the Holy Spirit in the sacraments, with special focus on the epiclesis. It shows that even though all sacraments in the Orthodox tradition are based on fixed liturgical formula, gestures, and structures, which might look repetitive and rigid to an outsider, the invocation of the Holy Spirit by the priests during the same sacraments conveys the idea that (i) every liturgical act is not self-sufficient but receives validation from on high; (ii) the newness in our liturgical experience comes from above; (ii) and that the element of freshness is always assured by our progress in communion with God.