Mark 6:52
52 for fthey did not understand about the loaves, but their hearts gwere hardened.
Romans 11:25
The Mystery of Israel’s Salvation
25 hLest you be wise in your own sight, I do not want you to be unaware of this mystery, brothers:1 ia partial hardening has come upon Israel, juntil the fullness of the Gentiles has come in.
Ephesians 4:18
18 They gare darkened in their understanding, halienated from the life of God because of the ignorance that is in them, due to itheir hardness of heart.