Hebrews 3:8

Do not harden your hearts as your forefathers provoked me by doing, As in that time of trial in the desert,

Matthew 13:15

For this nation's mind has grown dull, And they hear faintly with their ears, And they have shut their eyes, So as never to see with their eyes, And hear with their ears, And understand with their minds, and turn back, And let me cure them!'

Acts 19:9

But as some of them were obstinate and refused to believe, finding fault with the Way before the people, he left them, and withdrew the disciples, and held daily discussions in the lecture-room of Tyrannus.

Romans 2:5-6

But in your obstinacy and impenitence you are storing up wrath for yourself on the Day of Wrath, when the justice of God will burst forth.

1 Corinthians 10:9

Let us not try the Lord's patience too far, as some of them did, for they were killed for it by the snakes.

Hebrews 3:12-13

See to it, my brothers, that no one of you has a wicked, unbelieving heart, that turns away from the ever-living God,

Treasury of Scripture Knowledge

Summary

Harden not your hearts, as in the provocation, in the day of temptation in the wilderness:

General references

Bible References

Harden

Hebrews 3:12
See to it, my brothers, that no one of you has a wicked, unbelieving heart, that turns away from the ever-living God,
Matthew 13:15
For this nation's mind has grown dull, And they hear faintly with their ears, And they have shut their eyes, So as never to see with their eyes, And hear with their ears, And understand with their minds, and turn back, And let me cure them!'
Acts 19:9
But as some of them were obstinate and refused to believe, finding fault with the Way before the people, he left them, and withdrew the disciples, and held daily discussions in the lecture-room of Tyrannus.
Romans 2:5
But in your obstinacy and impenitence you are storing up wrath for yourself on the Day of Wrath, when the justice of God will burst forth.

Of

1 Corinthians 10:9
Let us not try the Lord's patience too far, as some of them did, for they were killed for it by the snakes.

General references

Luke 8:6
And some of it fell upon the rock, and when it sprang up it withered, because it had no moisture.