John 3:19

And this is the condemnation, that the light hath come into the world, and men loved the darkness rather than the light; for their deeds were evil.

John 12:35

Jesus therefore said to them, Yet a little while is the light among you. Walk while ye have the light, that darkness may not overtake you; and he that walketh in the darkness knoweth not whither he goeth.

Romans 1:28

And as they did not choose to retain God in their knowledge, God gave them up to a reprobate mind, to do things which are shameful;

2 Timothy 2:19

Nevertheless Gods firm foundation standeth, having this seal, "The Lord knoweth them that are his;" and, "Let every one that nameth the name of the Lord depart from iniquity."

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.

Treasury of Scripture Knowledge

Summary

They know not, neither will they understand; they walk on in darkness: all the foundations of the earth are out of course.

Know not

All the, etc

Bible References

Know not

Romans 1:28
And as they did not choose to retain God in their knowledge, God gave them up to a reprobate mind, to do things which are shameful;

All the, etc

2 Timothy 2:19
Nevertheless Gods firm foundation standeth, having this seal, "The Lord knoweth them that are his;" and, "Let every one that nameth the name of the Lord depart from iniquity."