Acts 7:51

Ye stiffnecked, and uncircumcised in heart and ears! ye do always resist the Holy Spirit; as your fathers did, so do ye.

Romans 2:5

but, after your hardness and impenitent heart, you are treasuring up for yourself wrath in the day of wrath and of the revelation of the righteous judgment of God,

Hebrews 3:13

but exhort one another daily, so long as it is called "To-day," lest anyone of you be hardened by the deceitfulness of sin;

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