https://www.goarch.org/holyunction
Greek Orthodox Holy Wednesday (Holy Unction) Religious Service Overview.
Holy Wednesday service occurs during Holy Week in the Orthodox Christian church.
It is a celebration of Christ's Holy Unction.
This sacrament encompasses healing and the celebration of the victory of Christ over sin and death.
On the afternoon or evening of Great and Holy Wednesday, the Sacrament or Mystery of Holy Unction is conducted in Orthodox parishes.
The Sacrament of Holy Unction is offered for the healing of soul and body and for the forgiveness of sins.
At the conclusion of the service of the Sacrament, the body is anointed with oil, and the grace of God, which heals infirmities of soul and body, is called down upon each person.
The Sacrament is performed by a gathering of priests, ideally seven in number, however, it can be performed by a lesser number and even by a single priest.