We know Jesus is the true light because He fulfills His role as the Savior who leads us out of spiritual darkness, as seen in His teachings throughout the New Testament.
The validity of Jesus as the true light of the world is affirmed through His actions, teachings, and the fulfillment of prophecy. In John 1:9, we learn that He is 'the true light, which lighteth every man that cometh into the world.' This claim reveals His universal ability to shine truth into the hearts of all people, dispelling the darkness of ignorance and sin.
Moreover, the evidence of His light is demonstrated in the transformation of lives. Those who come to Christ experience a new birth, illustrated in 2 Corinthians 5:17, which states, 'Therefore, if any man be in Christ, he is a new creature: old things are passed away; behold, all things are become new.' This profound change is the result of receiving the light that Christ provides, allowing believers to see God and His holiness clearly.
As further confirmed in Ephesians 5:8, Paul emphasizes that before Christ, believers were 'sometimes darkness,' but now they are 'light in the Lord.' The transformation from darkness to light is a testament to the truth of Jesus’ identity as the light. His unique role in salvation, stated in Acts 4:12, where Peter declares that 'neither is there salvation in any other,' emphasizes that He indeed is the singular source of spiritual light and life.
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