Mat 5:14 Ye are the light of the world. A city that is set on an hill cannot be hid.
Eph 5:8 For ye were sometimes darkness, but now are ye light in the Lord: walk as children of light:
1Th 5:5 Ye are all the children of light, and the children of the day: we are not of the night, nor of darkness.
1Pe 2:9 But ye are a chosen generation, a royal priesthood, an holy nation, a peculiar people; that ye should shew forth the praises of him who hath called you out of darkness into his marvellous light: