Hebrews 3:8
do not harden your hearts as your forefathers did in the time of the provocation on the day of the temptation in the Desert,
Matthew 13:15
For this people's mind is stupefied, their hearing has become dull, and their eyes they have closed; to prevent their ever seeing with their eyes, or hearing with their ears, or understanding with their minds, and turning back, so that I might heal them.'
Acts 19:9
But some grew obstinate in unbelief and spoke evil of the new faith before all the congregation. So Paul left them, and, taking with him those who were disciples, held discussions daily in Tyrannus's lecture-hall.
Romans 2:5-6
The fact is that in the stubbornness of your impenitent heart you are treasuring up against yourself anger on the day of Anger--the day when the righteousness of God's judgements will stand revealed.
1 Corinthians 10:9
And do not let us test the Lord too far, as some of them tested Him and were destroyed by the serpents.
Hebrews 3:12-13
see to it, brethren, that there is never in any one of you--as perhaps there may be--a sinful and unbelieving heart, manifesting itself in revolt from the ever-living God.