Isaiah 1:3
The ox knows his owner, and the ass his master's crib; but Israel does not know; My people do not understand.
Jeremiah 8:7
Yea, the stork in the heavens knows her seasons; and the turtle and the crane and the swallow watch the time of their coming; but my people do not know the judgment of Jehovah.
Isaiah 44:18
They have not known nor understood; for He has shut their eyes so that they cannot see; and their hearts so that they cannot understand.
Deuteronomy 32:28-29
For they are a nation without wisdom, neither is there any understanding in them.
Psalm 94:8
Understand, you beastly ones among the people; and fools, when will you be wise?
Proverbs 6:6
Go to the ant, sluggard; consider her ways and be wise;
Isaiah 5:12
And the lyre, and the harp, the timbrel, and pipe, and wine, are at their feasts; but they do not regard the work of Jehovah. Yea, they do not see the work of His hands.
Isaiah 27:11
When its branches are dried up, they shall be broken off; the women come and set them on fire; for it is a people of no understanding. Therefore His Maker will not have mercy on them, and He who formed them will not favor them.
Jeremiah 4:22
For My people are foolish; they have not known Me; they are stupid sons, and they have no understanding. They are wise to do evil, but to do good they have no knowledge.
Jeremiah 9:3-6
And they bend their tongues like their bow for lies. But they are not mighty for the truth on the earth; for they go from evil to evil, and they do not know Me, says Jehovah.
Jeremiah 10:8
But they are all at once foolish and animal-like; the tree is an example of vanities.
Jeremiah 10:14
Every man is stupid for lack of knowledge; every refiner is put to shame by the graven image; for his molten image is a lie, and no breath is in them.
Matthew 13:13-15
Therefore I speak to them in parables, because seeing they see not, and hearing they hear not; nor do they understand.
Matthew 13:19
When anyone hears the Word of the kingdom and does not understand it, then the wicked one comes and catches away that which was sown in his heart. This is the seed sown by the wayside.
Romans 1:28
And even as they did not think fit to have God in their knowledge, God gave them over to a reprobate mind, to do the things not right,
2 Peter 3:5
For this is hidden from them by their willing it, that the heavens were of old, and the earth out of the water, and through water, being held together by the Word of God,