Acts 17:30 And the times of this ignorance God winked at; but now commands all men every where to repent.
If a person was born with a definite mental disability God will deal with such individuals on a case by case basis, for He alone knows the inner workings of the mind, and God alone will settle those cases as it will pertain to accountability. However, if an individual, through their freedom of choice has deliberately subscribed to content that streams live from the kingdom of darkness, and has done so continuously in spite of the pleadings of the Holy Spirit to the contrary, that person’s choices will eventually culminate in a situation where their will comes under the direct control of the voices inside of their heads.
This is what took place with the pharaoh of old, who hardened his own heart against the Holy Spirit as he resisted calls to repent, and change course, even as those overtures came from God, Moses, and from his own advisors. He just would not listen, and therefore, he reached a point where, those voices inside of his head took complete and direct control of his mind, and drove him into unreasonable and irrational behaviors and decision making.
The same thing happened to Judas, who previously was not under the complete control of the voices in his head, but day by day, bit by bit, as he steeled his heart against all reproofs and corrections, and used his freedom of choice in favor of evil, it reached the point where his choices culminated in handing the reins of control over to the voices inside his head.
Acts 17:31 Because he hath appointed a day, in the which he will judge the world in righteousness by that man whom he hath ordained; whereof he hath given assurance unto all men, in that he hath raised him from the dead.
May The Lord add His blessing to the study of His word. God bless!