5 Bible Verses about Spiritual Blindness, In Unbelievers

Now the natural person [Note: Since this person is contrasted with the spiritual person of verse 15, it is taken here to mean the person without the Holy Spirit] does not receive the things [i.e., truths] revealed by the Holy Spirit of God, because they are [considered] foolishness to him. And he cannot understand them because they must be discerned by using spiritual judgment [i.e., judgment aided by the Holy Spirit].

And [His] light continued to shine, [even] in the darkness [of the world], and that darkness did not overcome Him [or, did not fully understand Him].

Some Pharisees, who were with Jesus, heard [Him say] these things, and replied, "Are we blind, too?" Jesus said to them, "If you were [really] blind [i.e., unable to see spiritually], you would not be guilty of sin. But since you claim, 'We can see [fine],' you remain guilty of sin."

Therefore, I am speaking to them with parables because [although] they can see, they [really] do not perceive, and [although] they can hear, they [really] do not comprehend, and so they [utterly] fail to understand [what I am trying to get across].

And He said to them, "You [disciples] are being given an understanding of the secrets of the kingdom of God, but the rest of the people [are being told] in parables, so that [even though they appear to be] seeing, they will not [actually] see; and [even though they seem to] hear, they will not understand.