How do we know the image of Christ is formed in believers?

The assurance that the image of Christ is being formed in believers comes through the work of the Holy Spirit, who glorifies Christ within the believer. According to Colossians 3:10, when believers put on the new man, they are renewed in knowledge after the image of their Creator. This renewal signifies a transformation that evidences itself in holiness. The Spirit draws out His likeness on the souls of believers, making Christ's character increasingly apparent in their lives.

As this image is reflected in every faculty of the soul, it becomes a profound witness to the power of Christ's grace. Believers begin to exhibit the principles of holiness, reflecting Christ's love, humility, and zeal for God's glory. The journey of sanctification is unique to each believer, yet the consistent work of the Spirit assures us of our transformation and the visible manifestation of Christ's character in our lives.