Why is it necessary to treat some sinners more harshly?

Manton notes that while compassion is crucial in dealing with sin, there are times when a more severe approach is warranted, particularly for those who have become obstinate or are leading others astray. The phrase 'save with fear' indicates that a grave sense of danger should be instilled in such individuals who are secure in their sin. For example, Jude's exhortation reflects that some must be dealt with through stern admonition or church discipline to awaken them to the reality of their peril. The underlying goal remains the same: the salvation and edification of the individual, but the method varies based on the person's condition. This discernment helps the church maintain its purity and witness in the world.