Can praying to Mary or the saints keep a professing Christian out of heaven?

Summary

The sermon addresses the idolatrous practice of praying to Mary and saints, a core denial of the gospel. Key references include the Council of Trent and the Catholic catechism, which are seen as anathematizing the gospel. The practical takeaway is that true Christians have a moral obligation to leave and identify with a valid church that upholds essential truths, particularly the sole mediatorship of Christ.