QUESTION: Will the madman be saved?

ANSWER: An idiot or insane person from birth never progressing beyond the mental stage of an infant or one so young as to be incapable of understanding would fall in the category of those mentioned in Matthew 18:3. These are not lost! If one became insane after reaching the age of accountability (thus having had at one time the mental capacity to obey the gospel of Christ) and had not been obedient, he or she shall be lost. (Roman 3:23; Mark 16:16; II Thessalonians 1:7- 9).