John 12:40
He hath blinded their eyes, and hardened their heart; in order that they may not see with their eyes, nor understand with their heart, and turn, and I shall heal them.
Romans 9:18-20
Then therefore he has mercy on whom he will, and whom he will he hardens.
2 Thessalonians 2:11-12
And on this account God sends to them the working of delusion, that they should believe a lie:
Treasury of Scripture Knowledge
Summary
O LORD, why hast thou made us to err from thy ways, and hardened our heart from thy fear? Return for thy servants' sake, the tribes of thine inheritance.
And hardened
Bible References
Why
2 Thessalonians 2:11
And on this account God sends to them the working of delusion, that they should believe a lie:
And hardened
John 12:40
He hath blinded their eyes, and hardened their heart; in order that they may not see with their eyes, nor understand with their heart, and turn, and I shall heal them.
Romans 9:18
Then therefore he has mercy on whom he will, and whom he will he hardens.