Isaiah 63:17

O Lord, why do you send us wandering from your ways, making our hearts hard, so that we have no fear of you? Come back, because of your servants, the tribes of your heritage.

Numbers 10:36

And when it came to rest, he said, Take rest, O Lord, and give a blessing to the families of Israel.

Isaiah 6:10

Make the hearts of this people fat, and let their ears be stopped, and their eyes shut; for fear that they may see with their eyes, and be hearing with their ears, and their heart may become wise, and they may be turned to me and made well.

Ezekiel 14:7-9

When any one of the men of Israel, or of those from other lands who are living in Israel, who has become strange to me, and takes his false gods into his heart, and puts before his face the sin which is the cause of his fall, comes to the prophet to get directions from me; I the Lord will give him an answer by myself:

John 12:40

He has made their eyes blind, and their hearts hard; for fear that they might see with their eyes and get knowledge with their hearts, and be changed, and I might make them well.

Deuteronomy 2:30

But Sihon, king of Heshbon, would not let us go through; for the Lord your God made his spirit hard and his heart strong, so that he might give him up into your hands as at this day.

Joshua 11:20

For the Lord made them strong in heart to go to war against Israel, so that he might give them up to the curse without mercy, and that destruction might come on them, as the Lord had given orders to Moses.

Psalm 74:1-2

Of God, why have you put us away from you for ever? why is the fire of your wrath smoking against the sheep who are your care?

Psalm 80:14

Come back, O God of armies: from heaven let your eyes be turned to this vine, and give your mind to it,

Psalm 119:10

I have made search for you with all my heart: O let me not go wandering far from your teaching.

Psalm 119:36

Let my heart be turned to your unchanging word, and not to evil desire.

Isaiah 29:13

And the Lord said, because this people come near to me with their mouths, and give honour to me with their lips, but their heart is far from me, and their fear of me is false, a rule given them by the teaching of men;

Zechariah 1:12

Then the angel of the Lord, answering, said, O Lord of armies, how long will it be before you have mercy on Jerusalem and on the towns of Judah against which your wrath has been burning for seventy years?

Romans 9:18-20

So then, at his pleasure he has mercy on a man, and at his pleasure he makes the heart hard.

2 Thessalonians 2:11-12

And for this cause, God will give them up to the power of deceit and they will put their faith in what is false:

Treasury of Scripture Knowledge

Summary

O LORD, why hast thou made us to err from thy ways, and hardened our heart from thy fear? Return for thy servants' sake, the tribes of thine inheritance.

Bible References

Why

Psalm 119:10
I have made search for you with all my heart: O let me not go wandering far from your teaching.
Ezekiel 14:7
When any one of the men of Israel, or of those from other lands who are living in Israel, who has become strange to me, and takes his false gods into his heart, and puts before his face the sin which is the cause of his fall, comes to the prophet to get directions from me; I the Lord will give him an answer by myself:
2 Thessalonians 2:11
And for this cause, God will give them up to the power of deceit and they will put their faith in what is false:

And hardened

Isaiah 6:10
Make the hearts of this people fat, and let their ears be stopped, and their eyes shut; for fear that they may see with their eyes, and be hearing with their ears, and their heart may become wise, and they may be turned to me and made well.
Deuteronomy 2:30
But Sihon, king of Heshbon, would not let us go through; for the Lord your God made his spirit hard and his heart strong, so that he might give him up into your hands as at this day.
Joshua 11:20
For the Lord made them strong in heart to go to war against Israel, so that he might give them up to the curse without mercy, and that destruction might come on them, as the Lord had given orders to Moses.
John 12:40
He has made their eyes blind, and their hearts hard; for fear that they might see with their eyes and get knowledge with their hearts, and be changed, and I might make them well.
Romans 9:18
So then, at his pleasure he has mercy on a man, and at his pleasure he makes the heart hard.

Return

Numbers 10:36
And when it came to rest, he said, Take rest, O Lord, and give a blessing to the families of Israel.
Psalm 74:1
Of God, why have you put us away from you for ever? why is the fire of your wrath smoking against the sheep who are your care?
Psalm 80:14
Come back, O God of armies: from heaven let your eyes be turned to this vine, and give your mind to it,
Zechariah 1:12
Then the angel of the Lord, answering, said, O Lord of armies, how long will it be before you have mercy on Jerusalem and on the towns of Judah against which your wrath has been burning for seventy years?

General references

Exodus 8:32
But again Pharaoh made his heart hard and did not let the people go.
Exodus 9:30
But as for you and your servants, I am certain that even now the fear of the Lord God will not be in your hearts.
Deuteronomy 29:4
But even to this day the Lord has not given you a mind open to knowledge, or seeing eyes or hearing ears.
Deuteronomy 30:18
I give witness against you this day that destruction will certainly be your fate, and your days will be cut short in the land where you are going, the land of your heritage on the other side of Jordan.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain