Ordination is a sacramental rite of the Orthodox Church, instituted by our Lord Jesus Christ, by which a man of God is given the power and authority to teach, to forgive and retain sins, and to distribute sacraments.
Men are ordained by other ordained men, in a continuous, unbroken line of succession, which goes all the way back to the apostles. Not only do we see such evidence in sacred scripture, but countless historical records prove the same.
Bible Verses about Ordination
Church Fathers on Ordination