But all things that are exposed are made manifest by the light, for whatever makes manifest is light. Therefore He says:
"Awake, you who sleep,
Arise from the dead,
And Christ will give you light." Ephesians 5:13-14 (NKJV)
He hath delivered my soul from going into the pit, and my life shall see the light. Job 33:28 (DNT).
God is the LORD which hath shown us light (Psm 118:27)
Your word is a lamp to my feet
And a light to my path. Psalm 119:105 (NKJV)
You are all sons of light and sons of the day. We are not of the night nor of darkness. 1 Thessalonians 5:5 (NKJV)
Therefore let us cast off the works of darkness, and let us put on the armor of light. Romans 13:12 (NKJV)
Do not be unequally yoked together with unbelievers. For what fellowship has righteousness with lawlessness? And what communion has light with darkness? 2 Corinthians 6:14 (NKJV)
As Spurgeon writes (Morning and Evening, Jan 5)
God has divided them (light from darkness), let us not confound them. Sons & daughters of light must not have fellowship with deeds, doctrines, or deceits of darkness. The children of the day must be sober, honest, and bold in their Lord's work, leaving the works of darkness to those who shall dwell in it for ever
A person in the light delights to do the commands of the Lord. (See also Psm 112)
He who says he is in the light, and hates his brother, is in darkness until now. 1 John 2:9 (NKJV)
Blessed is the man that walketh not in the counsel of the ungodly, nor standeth in the way of sinners, nor sitteth in the seat of the scornful. But his delight is in the law of the LORD; and in his law doth he meditate day and night. Psalm 1:1-2