Could This Bible Verse Destroy Protestantism?

Protestants are often referred to as "Bible" Christians because - allegedly unlike Catholics - they have scriptural proof texts to support their unique beliefs. But what happens when Catholics show that there are also proof texts that seem to undermine foundational traditions of Protestantism?
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The Bible Verse That Could Destroy Catholicism (Eph. 2:8-9) - • Could This Bible Verse...
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