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OP here-- no. I'm not asking you to defend the attributes of God at all, or even to defend this particular theodicy. I'm asking about the history of this theodicy. I know you and Bonhoeffer believe this one is supported in Scripture. But then surely other Christians before 1940 would have come to the same conclusion. So my question is asking who they are, and in which writings.
For the benefit of people with the same question, IMO it'll be better if you ask it separately with a question title that aids people searching the topic on this site. Something like "Why would the temporary presence of Christ's physical body within us in the Eucharist provide spiritual benefits?" If you do so, I'll try to do my best to answer. :)
Your first question has been asked and answered here: christianity.stackexchange.com/q/52066/35344 So I suggest you ask your second question about the spiritual advantages into a separate question.