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In Eastern Orthodoxy, is it most important for the efficacy of the sacraments that they be administered canonically by an ordained priest (who is in apostolic succession), or the fact that God is the one who works in and through the Holy Mysteries? Or is it both (or something else)? A discussion of canonical decisions made during the Novation and Donatist controversies would be helpful, as well as the decisions of Church councils. I am specifically interested in the sacraments of Baptism and Holy Communion (the Mystical Supper).

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1 Answer 1

I'm not Orthodox and I don't know much on Orthodox theology, but I'll try to answer from what I have found.

AFAIK Orthodox Church shares the ex opere operato doctrine though the understanding is not the same (here near the bottom). This means that the answer is "God". The action of the priest is necessary, but not so much, it's less important than in Catholic understanding.

The priest is necessary for Eucharist (like in Catholic Church). For baptism the priest is not necessary: under extraordinary conditions, even a layman can baptise.

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My answer might be too brief; I don't feel self-confident enough for discussions of reflections of Novationism/Donatism. Ask some more concrete subquestions in comments and I'll try to answer through updates. –  Pavel Feb 27 '13 at 11:28
I voted this up and gave you the bounty for putting forth the effort. Your answer is essentially correct, although I would love to see more elaboration before marking it as accepted (especially on the notion of 'canonical' administration of the Holy Mysteries). I've been discussing this with a bunch of Orthodox folks, so I think I have a better handle on this now. With your permission, I may even edit your response slightly to add some of the other information (but not if you don't want me to, I can just create my own answer if so). –  Dan Feb 27 '13 at 14:11
Permission granted. If I really didn't like your edit, I can always rollback it. I'll try to do some more research, but I'm too busy for it today (perhaps tommorow, perhaps during this weekend). –  Pavel Feb 27 '13 at 14:43
Sounds good. I'm also busy - you may edit before I do :P - Plus I still need to answer some other questions of yours on this site that I have been meaning to get back to.... –  Dan Feb 27 '13 at 23:26

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