Romans 2:5
Hard-hearted and impenitent as you are, you are storing up for yourself Wrath on the 'Day of Wrath,' when God's justice as a judge will be revealed;
Hebrews 3:8-9
Harden not your hearts, as when Israel provoked me on the day when they tried my patience in the desert,
Hebrews 3:13
Rather encourage one another daily--while there is a 'To-day'--to prevent any one among you from being hardened by the deceitfulness of Sin.
Hebrews 3:15-19
To use the words of Scripture-- 'If to-day you hear God's voice, harden not your hearts, as when Israel provoked me.'
Hebrews 12:25
Beware how you refuse to hear him who is speaking. For, if the Israelites did not escape punishment, when they refused to listen to him who taught them on earth the divine will, far worse will it be for us, if we turn away from him who is teaching us from Heaven.
Jude 1:5
Now I want to remind you--but you already know it all--that, though the Lord delivered the People from Egypt, yet he afterwards destroyed those who refused to believe in him;
Acts 19:9
Some of them, however, hardened their hears and refused to believe, denouncing the Cause before the people. So Paul left them and withdrew his disciples, and gave daily addresses in the lecture-hall of Tyrannus.