4 Bible Verses about Obstinacy Against God

And perceiving it, He saith to them, "Why are ye reasoning because ye have no bread? Do ye not yet perceive, nor understand? Have ye your heart hardened? Having eyes, do ye see not? and, having ears, do ye hear not? And, do ye not remember? When I broke the five loaves among the five thousand, how many baskets full of pieces did ye take up?" They say to Him "Twelve."read more.
"And, when the seven among the four thousand, how many basketfuls of pieces did ye take up?" And, they said, "Seven." And He said to them, "Do ye not yet understand?"

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

But in respect to Israel He saith, "All the day long did I spread out My hand to a disobedient and gain-saying people."

Concerning Whom we have much to say and difficult to explain, since ye have become dull of hearing. For even when, on account of the time, ye ought to be teachers, ye again have need that some one teach you the first elements of the oracles of God, and have become such as have need of milk, and not of solid food; for every one who partakes of milk is inexperienced in the word of righteousness, for he is a babe;read more.
but solid food is for full-grown men, who by practice have their senses trained for the discernment both of good and evil.