Matthew 13:13-15

"This is why I speak to them in parables, because seeing they do not see, and hearing they do not hear, nor do they understand.

Matthew 13:19

"Whenever any one hears the message of the kingdom, and does not understand it, the Evil One comes and snatches away what was sown in his heart.

Romans 1:28

And just as they refused to continue to retain God in their knowledge, so did God cast them out to an outcast mind, to do those things which were indecent.

2 Peter 3:5

For they willingly ignore the fact that there were heaven, from of old, and an earth formed out of water and through water, by the word of God;

Treasury of Scripture Knowledge

Summary

The ox knoweth his owner, and the ass his master's crib: but Israel doth not know, my people doth not consider.

Bible References

But israel

Matthew 13:13
"This is why I speak to them in parables, because seeing they do not see, and hearing they do not hear, nor do they understand.
Romans 1:28
And just as they refused to continue to retain God in their knowledge, so did God cast them out to an outcast mind, to do those things which were indecent.
2 Peter 3:5
For they willingly ignore the fact that there were heaven, from of old, and an earth formed out of water and through water, by the word of God;