50 Days after the Resurrection of Christ (Pascha)
In the Church’s annual liturgical cycle, Pentecost is “the last and great day.” It is the celebration by the Church of the coming of the Holy Spirit as the end - the achievement and fulfillment - of the entire history of salvation. For the same reason, however, it is also the celebration of the beginning: it is the “birthday” of the Church as the presence among us of the Holy Spirit, of the new life in Christ, of grace, knowledge, adoption to God and holiness.
The Pentecost icon depicts the descent of the Holy Spirit onto the Church in the form of fiery tongues (Acts 2:
With the descent of the Holy Spirit upon Christ's disciples, the time of salvation, the Divine work of redemption has been completed, the fulness revealed, all gifts bestowed: it belongs to us now to “appropriate” these gifts, to be that which we have become in Christ: participants and citizens of His Kingdom.