Mark 4:12

that they may surely see, and not perceive; and that they may surely hear, and not understand; lest they should turn to me, and their sins should be forgiven them.

Mark 8:17-21

And Jesus perceived it, and said to them: Why do you reason, because you have no bread? Do you not yet perceive, nor understand? Is your heart still hardened?

Ephesians 2:11

For which reason, remember that you were formerly Gen tiles, by natural descent, and that you are called Uncircumcision by the Circumcision; so called, from a mark made in the flesh by hands;

2 Thessalonians 2:10-12

and with all the delusion of unrighteousness in those who perish, because they did not receive the love of the truth, in order that they might be saved.

Treasury of Scripture Knowledge

Summary

Our fathers understood not thy wonders in Egypt; they remembered not the multitude of thy mercies; but provoked him at the sea, even at the Red sea.

Bible References

Our

Mark 4:12
that they may surely see, and not perceive; and that they may surely hear, and not understand; lest they should turn to me, and their sins should be forgiven them.
Mark 8:17
And Jesus perceived it, and said to them: Why do you reason, because you have no bread? Do you not yet perceive, nor understand? Is your heart still hardened?
2 Thessalonians 2:10
and with all the delusion of unrighteousness in those who perish, because they did not receive the love of the truth, in order that they might be saved.

They

Ephesians 2:11
For which reason, remember that you were formerly Gen tiles, by natural descent, and that you are called Uncircumcision by the Circumcision; so called, from a mark made in the flesh by hands;