If a Calvinist invokes mystery, that’s evasive and euphemistic:
The second major objection to Calvinism is a recurring pattern of euphemism we find among Calvinist writers…they typically try to evade the force of the problem by characterizing it as a mystery, paradox, antinomy, or “biblical tension”
J. Walls & D. Baggett, Good God: The Theistic Foundations of Morality (Oxford 2011), 72.
But if an Arminian invokes mystery, that’s hunky-dory:
These passages are difficult, and no matter what we might say about them, we don’t dispel the mystery of them.
J. Walls & D. Baggett, Good God: The Theistic Foundations of Morality (Oxford 2011), 136.
I am very much in sympathy with arguments that defend libertarian freedom, but I feel the force of objections by critics who think the whole notion is mysterious, and at times even seems to be incoherent.
J. Walls, “Why No Classical Theist, Let Alone Orthodox Christian, Should Ever Be a Compatibilist,” Philosophia Christi 13/1 (Summer 2011), 77.