Romans 2:5
In your hardness and impenitence of heart you are treasuring up for yourself wrath on the Day of Wrath, when the righteous judgment of God is revealed.
Hebrews 3:8-9
Continue not to harden your hearts as in the Provocation, On the day of temptation in the wilderness,
Hebrews 3:13
On the contrary, encourage each other daily, so long as there is a "Today," so that no one of you is hindered by the deceitfulness of sin.
Hebrews 3:15-19
In the words of Scripture, Today, if you hear his voice, Do not continue to harden your hearts as at the Provocation.
Hebrews 12:25
See that you do not refuse him who is speaking. For if they did not escape punishment when they refused to listen to their instructor on earth, much less shall we escape if we turn away from him who is teaching us from heaven;
Jude 1:5
I wish to remind you of what you already know right well, that although the Lord once saved a people out of the land of Egypt, he afterward destroyed those who did not believe;
Acts 19:9
But when some grew hardened and disobedient, and spoke evil of the Way before the crowd, he left them, withdrew the disciples, and continued to hold discussions daily in the lecture-hall of Tyrannus.