What does the Bible reveal about… darkness especially spiritual darkness

Spiritual darkness is a symptom of spiritual death. The un-regenerate are spiritually dead and live in spiritual darkness. All humans are born spiritually dead due to the original sin of Adam. The regenerate are made alive spiritually; they live in spiritual light. Only people who are spiritually alive can truly understand God’s Word in its truth and richness. For the unregenerate, this is impossible. Their mind and heart are darkened, and they are following a path of darkness, although they may not perceive it. They are enemies of God; He is not within them. A heart of darkness boils within them.

 “For although they knew God, they did not honor him as God or give thanks to him, but they became futile in their thinking, and their foolish hearts were darkened.” —Romans 1:21

The unregenerate are children of darkness—following in the ways of Satan, while regenerate followers of Christ are children of light. “The way of the wicked is like deep darkness; they do not know over what they stumble.” —Proverbs 4:19 

“For you are all children of light, children of the day. We are not of the night or of the darkness.” —1 Thessalonians 5:5 

“He has delivered us from the domain of darkness and transferred us to the kingdom of his beloved Son” —Colossians 1:13 

“…If then the light in you is darkness, how great is the darkness!” —Matthew 6:23 

Christ told the corrupt, dead church in Sardis,“I know your deeds… you are dead… repent… You have a few names even in Sardis who have not defiled their garments; and they shall walk with Me in white, for they are worthy. …” —Revelation 3:1-4  excerpt  

“If we say we have fellowship with him while we walk in darkness, we lie and do not practice the truth.” —1 John 1:6 “Take no part in the unfruitful works of darkness, but instead expose them.” —Ephesians 5:11    

“…the darkness is passing away and the true light is already shining. Whoever says he is in the light and hates his brother is still in darkness. Whoever loves his brother abides in the light, and in him there is no cause for stumbling. But whoever hates his brother is in the darkness and walks in the darkness, and does not know where he is going, because the darkness has blinded his eyes.” —1 John 2:8-11 ESV  “Do not be unequally yoked with unbelievers. For what partnership has righteousness with lawlessness? Or what fellowship has light with darkness?” —2 Corinthians 6:14 ESV“…let us cast off the works of darkness and put on the armor of light.” —Romans 13:12 ESV 

Universe currently dominated by spiritual darkness 

We live on a spiritually dark planet, due to actions of Satan, his demons (the fallen angels), and the fall of man to spiritual death and sinful depravity, all Creation is dominated by spiritual darkness. 

“For we do not wrestle against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places.” —Ephesians 6:12  

“To open their eyes, so that they may turn from darkness to light and from the power of Satan to God, that they may receive forgiveness osins and a place among those who are sanctified by faith in me.’” —Acts 26:18  

True followers of God can see despite the spiritual darkness of this world. 

“Even the darkness is not dark to you; the night is bright as the day, for darkness is as light with you.” —Psalm 139:12 

Works of darkness

These are impure actions—sins, the opposite of righteousness

“…let us cast off the works of darkness, and let us put on the armor of light.” —Romans 13:12  excerpt 

“Take no part in the unfruitful works of darkness, but instead expose them.” —Ephesians 5:11 

God is light

Although God is sometimes described as being concealed on darkness, there is no darkness in Him. He is light. 

“…God is light, and in him is no darkness at all.” —1 John 1:5 

God brought light to spiritual darkness through Christ 

“For God, who said, ‘Let light shine out of darkness,” has shone in our hearts to give the light of the knowledge of the glory of God in the face of Jesus Christ.” —2 Corinthians 4:6

 Jesus Christ, the Son of God is light

“…Jesus said to them, “The light is among you for a little while longer. Walk while you have the light, lest darkness overtake you. The one who walks in the darkness does not know where he is going.” —John 12:35 

“The light shines in the darkness, and the darkness has not overcome it.” —John 1:5 

Christians are to shine as light to the world.

Warning from the Apostle John

“He who says he is in the light, and hates his brother, is in darkness until now. He who loves his brother abides in the light, and there is no cause for stumbling in him. But he who hates his brother is in darkness and walks in darkness, and does not know where he is going, because the darkness has blinded his eyes.” —1 John 2:9-11 

“…become blameless and harmless, children of God without fault in the midst of a crooked and perverse generation, among whom you shine as lights in the world…” —Philippians 2:15 

“…You are the light of the world… Let your light so shine before men, that they may see your good works and glorify your Father in heaven.” —Matthew 5:14-16  

Sinners willfully stay in darkness

“And this is the judgment: the light has come into the world, and people loved the darkness rather than the light because their works were evil. For everyone who does wicked things hates the light and does not come to the light, lest his works should be exposed. But whoever does what is true comes to the light, so that it may be clearly seen that his works have been carried out in God.” —John 3:19-21 

God sometimes judges with spiritual darkness

“To the teaching and to the testimony! If they will not speak according to this word, it is because they have no dawn. …they will be enraged and will speak contemptuously against their king and their God, and turn their faces upward. And they will look to the earth, but behold, distress and darkness, the gloom of anguish. And they will be thrust into thick darkness.” —Isaiah 8:20-22 

“I form the light and create darkness,
I make peace and create calamity;
I, the Lord, do all these things.’” —Isaiah 45:7.