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 of ignorance indeed God overlooked; but he now commandeth all men every where to repent.
Acts 26:17
and of those in which I will appear to thee, Delivering thee from the people,
Romans 1:21
Because knowing God, they did not glorify him as God, neither were thankful, but became vain in their reasonings, and their foolish heart was darkened.
1 Corinthians 1:21
For since, in the wisdom of God, the world by wisdom knew not God, it pleased God by the foolishness of preaching to save them that believe.
2 Corinthians 4:4
Whose unbelieving minds the god of this world hath blinded, lest the illumination of the glorious gospel of Christ, who is the image of God, should shine upon them.
Galatians 4:8
Indeed then, when ye knew not God, ye served them that by nature are not gods.
1 Thessalonians 4:5
Not in passionate desire, as the Gentiles who know not God.

Alienated

Ephesians 2:12
being aliens from the commonwealth of Israel, and strangers from the covenants of promise; having no hope, and without God in the world.
Romans 8:7
Because the carnal mind is enmity against God; for it is not subject to the law of God, neither indeed can be.
Galatians 4:8
Indeed then, when ye knew not God, ye served them that by nature are not gods.
Colossians 1:21
And you that were once alienated, and enemies in your mind by wicked works,
1 Thessalonians 4:5
Not in passionate desire, as the Gentiles who know not God.
James 4:4
Ye adulterers and adultresses, know ye not, that the friendship of the world is enmity against God? Whosoever therefore desireth to be a friend of the world, is an enemy of God.

Because

Romans 1:21
Because knowing God, they did not glorify him as God, neither were thankful, but became vain in their reasonings, and their foolish heart was darkened.
Romans 2:19
And art confident, that thyself art a guide of the blind, a light of them that are in darkness, An instructer of the ignorant,
1 John 2:11
But he that hateth his brother, is in darkness, and walketh in darkness, and knoweth not whither he goeth, because darkness hath blinded his eyes.