What does the Bible say about damnable heresies?

In 2 Peter 2-3, the Apostle Peter cautions us about false teachers who subtly introduce damnable heresies into the church. These teachings are not mere alternative views but lead to spiritual destruction and judgment. For instance, the notion of man's free will directly opposes God's sovereign grace and the doctrine of total depravity. Additionally, the teachings that suggest salvation can be attained through works or adherence to Old Testament ceremonies also fall under this category of damnable heresies, which negate the work of Christ and the grace of God.