Reformed Reason
In Puritan England the role of reason in theology was a major point of contention between Reformed and Socinian theologians. Puritan theologians accused the Socinians of giving reason a place of preeminence above the Scriptures. Because they did this, the Puritans disagreed with the Socinians on almost every point of doctrine. And the Arminians also gave a place to reason that made it the rule of faith, which explains many of their own theological errors. The Lutherans and the Papists also were criticized by Reformed theologians for leaving reason at the door, so to speak, in their understanding of the Lord’s Supper.
For the Puritans, then, reason was helpful, but it had its limits. The mystery of the gospel holds out a number of truths that, on the surface, appear to be contradictions, but the Holy Spirit enables Christians to receive all of these truths without letting reason dominate in a way that leads to various theological errors.
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Thus, the Holy Spirit is given by God to the saints in order for them to believe the truths of Scripture that reason, on its own, cannot accept.
Joel R. Beeke and Mark Jones, A Puritan Theology: Doctrine for Life (Grand Rapids, MI: Reformation Heritage Books, 2012), 38-39.