John 3:19

And this is the judgment; that the light has come into the world, and men loved darkness rather than the light, because their deeds are evil.

John 12:35

Then Jesus said to them, Yet a little while is the light with you; walk while you have the light, that darkness may not overtake you; for he that walks in darkness knows not where he goes.

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 not proper,

2 Timothy 2:19

But the foundation of God stands firm, having this seal, The Lord knows them that are his; and, Let every one who names the name of the Lord depart from wickedness.

1 John 2:11

but he that hates his brother is in darkness, and walks in darkness, and knows not where he goes, because the darkness has 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 not proper,

All the, etc

2 Timothy 2:19
But the foundation of God stands firm, having this seal, The Lord knows them that are his; and, Let every one who names the name of the Lord depart from wickedness.