Do the Eastern Orthodox churches have valid sacraments?
I'm merely pointing out that Mr. Peters does answer your question, whether or not you like the answer.
I'm not sure that the Orthodox look much to natural law in their theology, and thus, I'm not sure that Mr. Peters’ explanation would make very much sense within the context of Orthodox theology.
But natural law certainly makes sense within the context of Catholic theology.
Nonetheless, whether the Orthodox have valid sacraments is sort of beside the point. The validity of their sacraments doesn't mean that the way they handle divorce and remarriage is theologically-valid (especially since subsequent marriages are outside of their sacramentology), or that something that works within the context of their theology would apply to the Western Church, properly. In the Western Church, it would merely be a complete vitiation of Jesus’ words.
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