What happens to those who have only head knowledge and not heart faith?
Those who possess only mental assent and head knowledge, but never true heart faith, are lost and face eternal doom. They miss heaven by twelve inches, because the gospel must be believed in the heart, not merely acknowledged in the mind. Such head knowledge cannot secure salvation.
Les explains that many people have heard the expression that a lot of people will miss heaven by 12 inches: they had it in the head but never got it in the heart. He stresses that true belief is heart belief, not just head knowledge or mental assent. He warns there is an eternal doom coming for those who do not have that kind of heart faith, and it will be awful for those who are lost. Therefore, we must be sure we are believing because God has opened our ability to believe and trust our whole eternal destiny on it.