“A sacrament is a way in which God imparts grace to His people. Orthodox Christians frequently speak of seven sacraments, but God’s gift of Grace is not limited only to those seven- the entire life of the Church is mystical and sacramental. The sacraments were instituted by Christ Jesus Himself (Jn 1:16,17)."

The Seven Mysteries are:

• Baptism (Mt 28:18-20; Rom 6:4; Gal 3:27)
• Chrismation (Acts 8:15-17; 1Jn 2:27)
• The Eucharist (Mt 26:26-28; Jn 6:30-58; 1 Co 10:16; 11:23-31)
• Confession (Jn 20:22,23; 1Jn 1:8,9)
• Ordination (Priesthood) (Mk 3:14; Acts 1:15-26; 6:1-6; 1Ti 3:1-13; 4:14)
• Marriage (Gn 2:18-25; Eph 5:22-33)
• Unction of the Sick (Lk 9:1-6; Jam 5:14,15).

Quotation from The Orthodox Study Bible, p.1786, St. Athanasius Academy of Orthodox Theology