Canon 2 A bishop-elect must know the Psalter and canons

Since, singing psalms, we pledge ourselves to God: I will meditate on your statutes, I will not forget your words; it is salutary for all Christians to keep this, but especially for those invested with the priestly dignity. Therefore we decree that everyone who is to be advanced to the rank of the episcopate shall by all means know the Psalter, so that, as a result of this, he may also admonish all the clergy under him to be initiated in the same way. And he is to be examined strictly by the metropolitan, whether he is eager to read searchingly, and not in passing, the sacred canons, and the holy Gospel, and the book of the divine Apostle, and all the divine Scripture; and to conduct himself according to the divine commandments, and to teach the people under him. For the essence of our hierarchy is the God-delivered oracles, that is, the true knowledge of the divine Scriptures, as the great Dionysius declared. And if he hesitates, and is not glad to do and to teach thus, let him not be ordained. For God said prophetically: You have rejected knowledge, and I will reject you from being a priest to me.