The manifestation of Christ as God through His baptism in the Jordan River by St. John the Baptist. During this feast, water is blessed in a special service, and many parishes perform the Great Blessing of Waters. The feast celebrates the revelation of the Trinity and Christ's divine nature.

The descent of the Holy Spirit upon the Apostles fifty days after Pascha, marking the full revelation of the Holy Trinity and the beginning of the Church's mission in the world. During Vespers, special kneeling prayers are offered and the church is adorned with greenery. This feast celebrates the completion of Christ's saving work and the outpouring of the Holy Spirit upon all believers. From this day forward, the Sundays of the year are numbered from Pentecost, signifying the continual life and growth of the Church in the grace of the Spirit.

The central worship service of the Orthodox Church, celebrating the Eucharist (Holy Communion). Usually celebrated on Sundays and feast days, the Divine Liturgy consists of the Liturgy of the Word (scripture readings) and Liturgy of the Faithful (Eucharistic prayer and communion). The most common forms are the Liturgies of St. John Chrysostom and St. Basil the Great.

The sanctification of water through special prayers, creating holy water for blessing and spiritual protection. The Great Blessing occurs at Theophany, while the Small Blessing can happen throughout the year. Holy water is used to bless homes, objects, and people, serving as a tangible reminder of our baptism and God's sanctifying presence in the material world.

A service of blessing water for use throughout the year, distinct from the Great Blessing at Theophany. Also called the Lesser Blessing of Waters, this service can be celebrated on any day and uses a similar structure to the Great Blessing but with fewer hymns and ceremonies. The blessed water is used for blessing homes, objects, and people, and is given to the faithful to drink for spiritual and physical healing. The service emphasizes water as a gift from God and a symbol of purification and life.