This word is used in its proper sense in De 28:34; Joh 10:20; 1Co 14:23. It also denotes a reckless state of mind arising from various causes, as over-study (Ec 1:17; 2:12), blind rage (Lu 6:11), or a depraved temper (Ec 7:25; 9:3; 2Pe 2:16). David feigned madness (1Sa 21:13) at Gath because he "was sore afraid of Achish."
In Scripture "madness" is recognized as a derangement proceeding either from weakness and misdirection of intellect or from ungovernable violence of passion. In one passage alone,
is madness expressly connected with demoniacal possession by the Jews in their cavil against our Lord; in none is it referred to any physical causes.