4 Bible Verses about Obstinacy Against God

He noted this and said to them, "Why do you argue you have no bread? Do you not see, do you not understand, even yet? Are you still dull of heart? You have eyes, do you not see? you have ears, do you not hear? Do you not remember how many baskets full of fragments you picked up when I broke the five loaves for the five thousand?" They said, "Twelve."read more.
"And how many basketfuls of fragments did you pick up when I broke the seven loaves for the four thousand?" They said, "Seven." "Do you not understand now?" he said.

Stiff-necked, uncircumcised in heart and ear, you are always resisting the holy Spirit! As with your fathers, so with you!

He also says of Israel, All the day long I have held out my hands to a disobedient and contrary people.

On this point I have a great deal to say, which it is hard to make intelligible to you. For you have grown dull of hearing. Though by this time you should be teaching other people, you still need someone to teach you once more the rudimentary principles of the divine revelation. You are in need of milk, not of solid food. (For anyone who is fed on milk is unskilled in moral truth; he is a mere babe.read more.
Whereas solid food is for the mature, for those who have their faculties trained by exercise to distinguish good and evil.)