Hastings' Dictionary of the Bible (1898)
LIGHT. By an easy transition from the physical to the moral sphere, light is used in Scripture in numerous figurative expressions imaging forth the mysteries of the spiritual world. Not only are cheerfulness, joy, intellectual clearness, moral truth, and divine blessedness repeatedly described as light, but the expression is also applied to the sources of these states; to men, John 5:35; Matt 4:16; to angels, 2 Cor 11:14; to Christ Luke 2:32; John 1:7-9; Ezr 8:12; John 12:35; and to God himself. Jas 1:17; 1 John 1:5; 1 Tim 6:16.