Is there a certain level of intelligence required to get into heaven? I would expect someone to be able to understand at least some of scripture to be saved, but how much intelligence is needed to understand what you need to be saved?
closed as primarily opinion-based by Flimzy, Affable Geek, David Stratton♦ Jul 17 '14 at 3:41
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No intelligence is required.
The Bible assures us that even a fool won't go astray on the Way.
What is this Way, then?
So even a fool following Jesus will be saved.
Jesus also states that the kingdom of God belongs to those such as children. Now, children can be intelligent at times, but certainly this doesn't sound like there's an intelligence requirement.
Yes - There is a minimal level of intelligence required to get into Heaven because one must at least understand what it means to:
Ignorance of these three things would necessarily prevent entrance into Heaven because these are the very things that define a Christian. Without a rudimentary awareness of these concepts (even if not from the Bible) one may be rightfully labeled a "non-believer" (though not necessarily a disbeliever, because ignorance of the Truth doesn't necessarily imply a rejection of it).
EDIT: In response to a comment, I'd like to add that the above does not apply to a baby who dies before Baptism. While I can't speak to every denomination, I know that the Catholic Church has changed it's position several times on this matter, but the current teaching holds that:
EDIT 2: Indeed, I am drawing an important distinction between someone who perished before they had a chance to experience God (or someone who was mentally incapacitated) and someone who either carelessly or willfully remained ignorant of God throughout their entire full life.