Is Roman Catholicism simply another Christian denomination?

According to Justin Peters, Roman Catholicism departs from biblical Christianity at essential points related to salvation, justification, and authority. The Five Solas clarify why the differences are foundational rather than secondary.

Why do the Five Solas matter when evaluating Roman Catholicism?

The Solas—grace alone, faith alone, Christ alone, Scripture alone, for the glory of God alone—provide a clear biblical grid that exposes the errors of works-based systems and upholds the sufficiency of Christ and His Word.

Does the Bible teach a repeated sacrifice of Christ through the Mass?

No. Hebrews teaches that Christ offered Himself once for all. The repeated sacrificial nature of the Mass contradicts the finality and sufficiency of His one atoning work.

Why is purgatory incompatible with the gospel?

Purgatory denies the sufficiency of Christ’s once-for-all atonement and the truth that believers are fully forgiven in Christ. Romans 8:1 declares that there is no condemnation for those in Christ Jesus.

The Ruinous Rules of Rome: A Biblical Response to Roman Catholicism

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The Ruinous Rules of Rome: A Biblical Response to Roman Catholicism

Sound Theology & Discernment with Justin Peters • Recorded October 19, 2025 • Kewanee Community Church (Sandpoint, ID)

Justin Peters | Sound Theology & Discernment

Show Summary

In this message, Justin Peters evaluates Roman Catholicism through the Five Solas of the Reformation, grace alone, faith alone, Christ alone, Scripture alone, to the glory of God alone. The sermon surveys imputed righteousness, the once-for-all atonement of Christ, the Mass and purgatory, and the authority of Scripture. The aim is pastoral clarity, helping believers speak the truth in love to Roman Catholic friends and family.

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Highlights

“If it is by grace, it is no longer on the basis of works, otherwise grace is no longer grace.” Romans 11:6

“For by one offering He has perfected for all time those who are sanctified.” Hebrews 10:14

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Subscribe on YouTube for more biblical teaching and discernment resources from Justin please visit his page at Servants of Grace.

This episode first appeared on Justin’s YouTube channel and is posted here with his permission: https://www.youtube.com/watch?v=9DVXAXyk6AE

Justin Peters

Born and reared in Vicksburg, Mississippi, Justin earned his undergraduate at Mississippi State University (1995) and then a Master of Divinity and Master of Theology (2000, 2002) from Southwestern Baptist Theological Seminary in Fort Worth, Texas.Justin met his bride, Kathy, at an evangelism conference near Los Angeles, California, in 2009. They were married in August of 2010. From 2014 until 2019, they lived in Sandpoint, Idaho, and were members of Kootenai Community Church.They now reside outside of Billings, Montana, along with their little dog, Mia. They are members of Laurel Bible Church, where Justin currently serves as an elder.

The Ruinous Rules of Rome: A Biblical Response to Roman Catholicism

The Ruinous Rules of Rome: A Biblical Response to Roman Catholicism

Show Summary

Listen

Watch

Highlights

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Justin Peters

The Ruinous Rules of Rome: A Biblical Response to Roman Catholicism

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