There was a man sent from God whose name was John. He came as a witness to testify concerning that light, so that through him all might believe. He himself was not the light; he came only as a witness to the light. John 1:6-8(NIV)
God is light. To be a witness to the light is to be convinced of, and live the same Truth that God believes and is convinced of.Jesus is the Truth that God knows and is fully convinced of about us.Jesus is the full price God paid to prove and convince us of our value in His sight.Believing this leads to acting and living right and whole. This is the righteous and holy life that pleases God.This is how we’re witnesses to the light.