How do we know that God shines His light in our hearts?

The assurance that God shines His light in our hearts comes from the experiential reality of recognizing our deep spiritual need and the illumination that reveals Christ's glory. The Apostle Paul's testimony illustrates this well; he moved from a strict adherence to the law to an awareness of the profound grace found in Christ. His own encounter with the light on the Damascus road showcased not just an external brightness but also a deep internal transformation. This echoes the experience of the shepherds, who left their darkness to worship the newborn Savior. The shining of God’s light reveals the emptiness of a life apart from Him while offering the hope of salvation through faith in Jesus Christ.