Wherefore, as the Holy Spirit says: To-day, if you will hear his voice, harden not your hearts, as in the bitter provocation, in the day of trial in the wilderness, where your fathers tried me, proved me, and saw my works forty years.

darkened in their understanding, alienated from the life of God through the ignorance that is in them, because of the hardness of their heart;

But, according to your hard and impenitent heart, you treasure up to yourself wrath for a day of wrath, and of the revelation of the righteous judgment of God,

Take heed, brethren, lest there be in any of you an evil heart of unbelief in apostatizing from the living God. But exhort one another daily, while it is called To-day, lest any of you be hardened by the deceitfulness of sin. For we are partakers of the Christ, if we hold our begun confidence firm to the end;read more.
while it is said, To-day, if you will hear his voice, harden not your hearts, as in the bitter provocation.

and in this place again: They shall not enter into my rest. Since, then, it remains that some must enter into it, and they, to whom the good news was first preached, did not enter in on account of unbelief, again, he determines a certain day, saying in David, after so long a time, To-day, as it is said, To day, if you will hear his voice, harden not your hearts.

He has blinded their eyes, and hardened their heart, lest they should see with their eyes, and understand with their heart, and should turn, and I should give them health.

He said to them: Moses, on account of the hardness of your hearts, permitted you to put away your wives; but from the beginning it was not so.

And Jesus answered and said to them: On account of the hardness of your hearts, he wrote this commandment for you.

If a brother or sister be naked, and destitute of daily food, and any of you say to them, Go in peace, be warmed and be filled, and yet give them not the things that are needful for the body, what does this profit them?

Whoever has this world's goods, and sees his brother have need, and shuts his heart against him, how dwells the love of God in him?

And he went up to them into the ship; and the wind ceased. And they were greatly amazed in themselves beyond measure, and wondered; for they had learned nothing from the loaves: for their heart was hardened.

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?

For the heart of this people has become fat; and with their ears they hear heavily; and their eyes they have closed; lest they should see with their eyes, and hear with their ears, and understand with their heart, and should turn to me, and I should give them health.

And looking around on them with anger, being grieved for the hardness of their heart, he said to the man: Stretch forth your hand; and he stretched it forth: and his hand was restored.

And not agreeing among themselves, they departed, after Paul had spoken one word: Well did the Holy Spirit speak to our fathers by Isaiah the prophet, saying: Go to this people and say, You shall surely hear, but you will not understand; and you shall surely see, but you will not perceive. For the heart of this people has become fat, and with their ears they hear heavily, and their eyes they have closed, lest they should see with their eyes, and hear with their ears, and understand with their heart, and should turn, and I should restore them to health.