The general outline of the response is that in drawing the distinction between formal logic and divine logic and in drawing conclusions from it are you
(1) Using human or divine logic? (2) Saying something true?
You can see how the discussion would flow from there.
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Many Protestants are absolutely convinced of human depravity, me included.
It's the meaning, consequences, and extent (in other words, the fine print) where the conversation gets interesting.
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I agree that God is free from constraints but He cannot act in ways that are contrary to His nature. So, in that sense He is constrained by His own nature.
We are in agreement. If one can only do good, some will see that as a limitation. Others will see it as pure freedom.
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As to the intercession of the saints, let's not go there today. It's been done to death a thousand times.
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I read nothing in Scripture that proclaims Mary to be the Seat of Wisdom, and I have no reason to think of her as such.
I read nothing in Scripture that says that Jesus sat in Mary's lap. I suppose he did. And I do find (1 Cor. 1:24) tat Christ is the "Wisdom of God." So IF he sat in her lap, then at least for a while she was the seat of Wisdom.
I am not a theologian, scholar, prophet, priest/minister, or teacher; so, I have no need or desire to go beyond my complete acceptance of human depravity as a condition of human life. My faith is simple but not simplistic, fundamental but not fundamentalist.
God's inability to act outside His own nature could be considered a limitation in human terms but probably not in Divine. I say probably because the issue (I think) is open to debate. I am not equipped to debate it.
I hope saints will intercede for me, but I will not ask them to. I think that anyone with the qualities of a saint would intercede for as many people as possible.
To compare Jesus sitting in Mary's lap with her being the Seat of Wisdom is to compare two concepts that are not related. As far as we know, all children sit in the laps of their mothers or in those who act in that capacity. It is a condition of human life. Being the Seat of Wisdom is not. To make such an argument is foolish.