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.
Hebrews 3:8-9
Do not harden your hearts as your forefathers provoked me by doing, As in that time of trial in the desert,
Hebrews 3:13
but encourage one another every day, as long as we can still speak of Today, so that no one of you may have his heart hardened by the pleasantness of sin.
Hebrews 3:15-19
So while we can still speak of Today, if you hear him speak, do not harden your hearts, as they provoked him by doing.
Hebrews 12:25
Take care not to refuse to listen to him who is speaking. For if they could not escape because they would not listen to him who warned them here on earth, how much less can we, who reject him who is from heaven!
Jude 1:5
Now I want to remind you, though you know it all already, that he who brought the people safely out of the land of Egypt afterward destroyed the ones who did not believe,
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.