Sign of the cross in the context of "God the Holy Spirit"

The Byzantine Rite, also known as the Greek Rite or the Rite of Constantinople, is a liturgical rite that is identified with the wide range of cultural, devotional, and canonical practices that developed in the Eastern Christian church of Constantinople.

The canonical hours are extended and complex, lasting about eight hours (longer during Great Lent) but are abridged outside of large monasteries. An iconostasis, a partition covered with icons, separates the area around the altar from the nave. The sign of the cross, accompanied by bowing, is made very frequently, e.g., more than a hundred times during the divine liturgy, and there is prominent veneration of icons, a general acceptance of the congregants freely moving within the church and interacting with each other, and distinctive traditions of liturgical chanting.

The Trinitarian formula is the phrase "in the name of the Father, and of the Son, and of the Holy Spirit" (Koine Greek: εἰς τὸ ὄνομα τοῦ Πατρὸς καὶ τοῦ Υἱοῦ καὶ τοῦ Ἁγίου Πνεύματος, romanized: eis to ónoma toû Patros kai toû Huioû kai toû Hagíou Pneúmatos; Latin: in nomine Patris et Filii et Spiritus Sancti), or words to that form and effect, referring to the three persons of the Christian Trinity. It is often followed by an "amen".

The Trinitarian formula is used in baptism as well as in numerous prayers, rites, liturgies, and sacraments. One of its most common uses apart from baptism is when Roman Catholics, Eastern and Oriental Orthodox, Lutherans, Anglicans, Methodists, and others make the sign of the cross while reciting the formula.