I used to have a growing library of anti-Catholic things, all in ‘defense of Protestantism.’ Let me just give my knowledge that there isn’t anything there I haven’t seen a Catholic refute.
One thoughtful defense of Protestant ecclesiology is In Our Image and Likeness by Miroslav Wolf. He takes on Ratzinger (before he was Pope) and the Orthodox theologian Zizioulas, and articulates a “free-church” congregationalist ecclesiology as most closely corresponding to Trinitarian theology. I don’t necessarily agree with Wolf, but if you want a thoughtful Protestant critique of one aspect of Catholic theology, that would be one place to go. Another good Protestant theologian is the Methodist William Abraham. His long book Canon and Criterion and his much shorter and more accessible The Logic of Renewal both contain critiques of Catholicism, although the Protestantism Abraham defends is deeply influenced by Eastern Orthodoxy and he has a lot of critical things to say about the Protestant Reformers.
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