God is Light.
1 John 1:5
5 This is the message we have heard from him and declare to you: God is light; in him there is no darkness at all.
27 The Lord is my light and my salvation —
whom shall I fear?
9 For with you is the fountain of life;
1 Tim 6:15-16
God, the blessed and only Ruler, the King of kings and Lord of lords, 16 who alone is immortal and who lives in unapproachable light, whom no one has seen or can see. To him be honor and might forever. Amen.
5 There will be no more night. They will not need the light of a lamp or the light of the sun, for the Lord God will give them light. And they will reign forever and ever.
in your light we see light.
The term light certainly carries with it a moral purity. However, it mostly speaks to the purity of God, and His complete separation from sinful man that dwells in darkness. Often the term darkness is used in Scripture to portray evil. However, darkness is not just the realm of Satan as so many think. Darkness is also the place where man is dwells daily.
19 This is the verdict: Light has come into the world, but men loved darkness instead of light because their deeds were evil.
4 In him was life, and that life was the light of men. 5 The light shines in the darkness, but the darkness has not understood it.
Because man is trapped in darkness he is unable to understand the gospel. Because the Gospel is light, the spiritual Darkness in man rejects it, and counts it as foolishness. 1 Cor 1:23
23 but we preach Christ crucified: a stumbling block to Jews and foolishness to Gentiles,
Just as darkness cannot stand in the presence of light but must vanish. Man cannot stand in the presence of God’s perfection and live.