Treasury of Scripture Knowledge

Summary

Having the understanding darkened, being alienated from the life of God through the ignorance that is in them, because of the blindness of their heart:

Bible References

The understanding

Acts 17:30
The times indeed of ignorance God overlooked; but now commandeth all men every where to repent;
Acts 26:17
delivering thee from the people, and from the gentiles, to whom I send thee,
Romans 1:21
Because though they knew God, they did not glorify him as God, nor were they thankful to him; but became perverse in their reasonings, and their senseless minds were darkened;
1 Corinthians 1:21
For since, in the wisdom of God, the world by its wisdom knew not God, it pleased God by the foolishness of preaching to save those who believe;
2 Corinthians 4:4
in whom the God of this world blinded the understandings of the unbelieving, so that they cannot behold the light of the gospel of the glory of Christ, who is the image of God.
Galatians 4:8
But at that time, indeed, when ye knew not God, ye were in slavery to those who in their nature are not gods;
1 Thessalonians 4:5
not in the passion of lust, even as the gentiles who know not God;

Alienated

Ephesians 2:12
that ye were at that time without Christ, being aliens from the commonwealth of Israel, and strangers to the covenants of the promise, having no hope, and without God, in the world;
Romans 8:7
Because the mind of the flesh is enmity against God; for it doth not submit itself to the Law of God, neither indeed can it.
Galatians 4:8
But at that time, indeed, when ye knew not God, ye were in slavery to those who in their nature are not gods;
Colossians 1:21
And you, that were once alienated, and enemies in your mind in wicked works, yet now hath he reconciled
1 Thessalonians 4:5
not in the passion of lust, even as the gentiles who know not God;
James 4:4
Ye adulteresses, know ye not that the friendship of the world is enmity with God? Whoever therefore chooseth to be a friend of the world, becometh an enemy of God.

Because

Romans 1:21
Because though they knew God, they did not glorify him as God, nor were they thankful to him; but became perverse in their reasonings, and their senseless minds were darkened;
Romans 2:19
and art confident that thou thyself art a guide of the blind, a light to those who are in darkness,
1 John 2:11
but he that hateth his brother is in the darkness, and walketh in the darkness, and knoweth not whither he goeth, because the darkness hath blinded his eyes.