4 Bible Verses about Spiritual Blindness, Results Of Sin

For the god of this world [i.e., Satan] has blinded the minds of the unbelievers, so that they would not see the light of the Gospel of the splendor of Christ, who is the image of God.

Now this is [how God's] judgment [works]: The Light [See 1:5-9] has come into the world, but people loved darkness [i.e., sin] rather than the Light, because their deeds were evil. For every person who practices evil things hates the light [of truth] and does not come to it, for fear of having his deeds exposed [as sinful].

They were not able to believe because Isaiah also said [Isa. 6:10], "God has blinded their eyes [of understanding] and closed their minds. If He had not done so, they would [be able to] see with their eyes and understand with their minds and turn [to God] so He could heal them [spiritually]."

So, I tell you this, and insist [on it] by [the authority of] the Lord: Do not continue to live with worthless thoughts as [unconverted] Gentiles do. Their understanding [of spiritual things] is darkened and excluded from the [spiritual] life that God gives, because of the ignorance in their minds and the stubbornness in their hearts. They have stopped caring [i.e., about morality], so God has abandoned them to lives of unrestrained indecency and to engage in all kinds of [moral] impurity, with a constant desire for more.