Now there were in the same country shepherds living out in the field , keeping watch over their flocks by night.
And behold ,an angel of the Lord stood before them, and the glory of the Lord shone around them and they were greatly afraid...Luke 2 :8,9.
Why light was shine? Because God want to send His glory in Jesus. Jesus Christ Himself is light of the world. God Himself is the source of the Light... This is the message which have we heard from Him and declare to you, that
God is light. and in Him is no darkness at all....I John 1:5. And Jesus said to them, "A little longer the light is with you. Walk while you have the light , lest darkness overtake you, he who walks in darkness does not know where he is going. While you have the light believe in the light that you may become the sons of light." ..."I have come as a light in to the world ,that whoever believes in me should not abide in darkness... John 12 : 35, 36, 46. So in this Christmas accept Lord Jesus Christ in our heart so we may be sons of light.This is the foundation of our testimony ...and you are a chosen generation ,a royal priesthood , a holy nations , His own special people , that you may proclaim the praises of Him who called you out of darkness in to His marvelous light; Who once were not a people but are now the people of God, who had not obtained mercy but now have obtained mercy.I Peter 2:9, 10.
Now when we have this marvelous light in our heart so walk in the light..." But if we walk in the light as He is in the light , we have fellowship with one another and the blood of Jesus Christ His Son cleanses us from all sins." I John
1:7. This light will give power because you will get armor of the light....."The night is far spent , the day is at hand .
Therefore let us cast off the works of darkness ,and let us put on the armor of the light." Roman 13 : 12.
Finally Bible says " Do not be unequally yoked together with unbelievers . For what fellowship has righteous with
lawlessness? And what the communion has light with darkness.II Corinth. 6 : 14. So in this season, marvelous light of God must shine in your heart.