Bible Verses About Unbelief: Hardness of heart

Afterwards, as they are reclining (at meat), he was manifested to the eleven, and did reproach their unbelief and stiffness of heart, because they believed not those having seen him being raised;

and when certain were hardened and were disbelieving, speaking evil of the way before the multitude, having departed from them, he did separate the disciples, every day reasoning in the school of a certain Tyrannus.