Spiritual blindness – What is it?

from the old testament

• Spiritual blindness is the inability to perceive and respond to God’s truth. It is not the lack of physical sight, but the lack of spiritual perception—the heart and mind are unable or unwilling to grasp God’s ways, even when His truth is plainly revealed. The Old Testament often uses physical blindness to symbolize this spiritual and moral darkness.
• Early on in Scripture, we learn that, after the fall (Genesis 3), humanity’s moral and spiritual vision was darkened. This meant that all men and women everywhere were blinded by sin. The result of mankind falling into darkness was that when the LORD looked He “saw that the wickedness of man was great in the earth, and that every intention of the thoughts of his heart was only evil continually” (Genesis 6:5).
• Asaph commented on how this state affected Israel, saying, “They have neither knowledge nor understanding, they walk about in darkness; all the foundations of the earth are shaken” (Psalm 82:5). The law warned against injustice and oppression, but Israel frequently ignored God’s commands, showing that they could see with their eyes yet not perceive with their hearts (Isaiah 6:9–10).
• In Deuteronomy 29:2–4, Moses reminded Israel of all they had witnessed in Egypt and the wilderness but in verse 4 said, “But to this day the LORD has not given you a heart to understand or eyes to see or ears to hear.” Spiritual perception, then, is ultimately a gift from God. Even those who saw His miracles first-hand could remain blind to their spiritual significance.
• The prophets repeatedly confronted Israel’s leaders for their blindness. Isaiah described watchmen who were “blind; they are all without knowledge” (Isaiah 56:10), and Jeremiah said the people had “eyes but see not” (Jeremiah 5:21). Such blindness led to disobedience, idolatry, and God’s judgment.
• Despite the all-too-frequent blindness described in the Old Testament, there was also a strand of hope. For example, God said, “I will lead the blind in a way that they do not know, in paths that they have not known I will guide them. I will turn the darkness before them into light, the rough places into level ground. These are the things I do, and I do not forsake them” (Isaiah 42:16). He was pointing forward to the Messiah’s saving work and that through Him, God would open the spiritual eyes of His people.

from the new testament

• In the New Testament, spiritual blindness refers to the inability to recognize and receive God’s truth as revealed in Jesus Christ. A spiritually blind person cannot see their need for salvation, understand the gospel, or perceive the glory of Christ. This condition can come from ignorance, deception, or willful rejection of the truth, and it leaves a person in darkness until God opens their spiritual eyes.
• The New Testament builds on Old Testament imagery and identifies Jesus as the one who opens spiritual eyes. In John 9, Jesus healed a man born blind and used the miracle to teach about spiritual sight and blindness. He said, “For judgment I came into this world, that those who do not see may see, and those who see may become blind” (John 9:39). Physical healing was a vivid parable of the gospel’s hidden power to give sight to the spiritually blind.
• This is needed because, as Paul explains, “the god of this world has blinded the minds of the unbelievers to keep them from seeing the light of the gospel of the glory of Christ” (2 Corinthians 4:4). The “god of this world” refers to Satan, who is actively working to make sure men and women cannot understand the Gospel. His ability to blind, however, is ineffective after a person turns to the Lord, and the veil is taken away (2 Corinthians 3:14–16). Without this work, “They are darkened in their understanding, alienated from the life of God because of the ignorance that is in them, due to their hardness of heart” (Ephesians 4:18).
• Jesus also addressed the spiritual blindness of religious hypocrisy. He called the Pharisees “blind guides” (Matthew 23:16) because, despite knowing the Scriptures, they failed to recognize Him as the Messiah. Notice that spiritual blindness is not ignorance; it can occur even with great knowledge, sometimes being a willful refusal to acknowledge the truth.
• Jesus said, “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” (John 3:19–20). Spiritual blindness is like having a fear and sensitivity to the light (truth). So, spiritual blindness is more than people being unable to see, it’s that they don’t want to, and hide from the truth. This is because they know that the light means that their sin will be exposed, and they want to keep sinning.
• The New Testament promises that those who believe in Christ are brought “out of darkness into his marvelous light” (1 Peter 2:9). The eyes of their hearts are enlightened (Ephesians 1:18), enabling them to live by faith, walk in obedience, and see the glory of God in the face of Jesus Christ (2 Corinthians 4:6).

implications for today

Spiritual blindness is not merely a lack of information; it is a deep spiritual problem that affects every person apart from Christ. You can be highly educated, morally upright, and religiously active, yet still unable to see your need for salvation. The only cure is God’s gracious work in opening your eyes through the gospel.

If you are in Christ, remember that you were once blind but now see—not because of your wisdom or effort, but because God revealed Himself to you. Allow that thought to humble you, producing a deep compassion for those still in darkness. It should also drive you to pray for God to open the eyes of unbelievers, knowing that only He can overcome the blindness caused by sin and Satan.

For those who do not yet know Christ, the warning is urgent: without Him, you remain in darkness, unable to see the truth that can save you. How, then, can you see if you are blind and don’t know where to look? Read the Bible, pray that God will remove your blindness, and trust in Jesus in faith. When you do, He will remove the veil, forgive your sin, and bring you into the light of His presence forever!