What is the danger of believing in progressive sanctification?

The concept of progressive sanctification presents the danger of leading believers to think their spiritual growth is heavily reliant on their efforts, which can lead to pride or despair. When believers measure their holiness based on their performance, they may mistakenly judge themselves against others, fostering pride in their accomplishments or leading to despair when they fall short. The emphasis on self-driven progress detracts from the work of Christ, which is the true basis of our sanctification. Recognizing that sanctification occurs through Christ alone ensures that believers remain humble and reliant on His power to grow in grace.