How does the light of Christ expose darkness?

The illuminating nature of Christ's light serves to bring forth the realities of human sinfulness. When the light shines, it contrasts starkly with darkness, helping us to see our moral and spiritual shortcomings. As stated in John 3:19-21, people often prefer darkness because it conceals their sin. However, the light of Christ confronts us with the truth, urging repentance and guiding us toward healing and redemption. This illumination is vital for spiritual awakening and transformation, thus allowing believers to experience the fullness of life found in Christ.