Mark 10:5

But Jesus said to them, Because of your hard hearts he gave you this law.

Matthew 19:8

He says to them, Moses, because of your hard hearts, let you put away your wives: but it has not been so from the first.

Deuteronomy 9:6

Be certain then that the Lord your God is not giving you this good land as a reward for your righteousness; for you are a stiff-necked people.

Deuteronomy 31:27

For I have knowledge of your hard and uncontrolled hearts: even now, while I am still living, you will not be ruled by the Lord; how much less after my death?

Nehemiah 9:16-17

But they and our fathers, in their pride, made their necks stiff, and gave no attention to your orders,

Nehemiah 9:26

But they were hard-hearted, and went against your authority, turning their backs on your law, and putting to death your prophets, who gave witness against them with the purpose of turning them back again to you, and they did much to make you angry.

Acts 7:51

You whose hearts are hard and whose ears are shut to me; you are ever working against the Holy Spirit; as your fathers did, so do you.

Hebrews 3:7-10

And so, as the Holy Spirit says, Today if you let his voice come to your ears,

Treasury of Scripture Knowledge

Summary

And Jesus answered and said unto them, For the hardness of your heart he wrote you this precept.

Bible References

For

Deuteronomy 9:6
Be certain then that the Lord your God is not giving you this good land as a reward for your righteousness; for you are a stiff-necked people.
Deuteronomy 31:27
For I have knowledge of your hard and uncontrolled hearts: even now, while I am still living, you will not be ruled by the Lord; how much less after my death?
Nehemiah 9:16
But they and our fathers, in their pride, made their necks stiff, and gave no attention to your orders,
Matthew 19:8
He says to them, Moses, because of your hard hearts, let you put away your wives: but it has not been so from the first.
Acts 7:51
You whose hearts are hard and whose ears are shut to me; you are ever working against the Holy Spirit; as your fathers did, so do you.
Hebrews 3:7
And so, as the Holy Spirit says, Today if you let his voice come to your ears,

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