Whether prophecy pertains to knowledge?

Objections

Objection 1 : It would seem that prophecy does not pertain to knowledge. For it is written (Ecclus. 48:14) that after death the body of Eliseus prophesied, and further on (Ecclus. 49:18) it is said of Joseph that "his bones were visited, and after death they prophesied." Now no knowledge remains in the body or in the bones after death. Therefore prophecy does not pertain to knowledge.
Objection 2 : Further, it is written (1 Cor. 14:3): "He that prophesieth, speaketh to men unto edification." Now speech is not knowledge itself, but its effect. Therefore it would seem that prophecy does not pertain to knowledge.
Objection 3 : Further, every cognitive perfection excludes folly and madness. Yet both of these are consistent with prophecy; for it is written (Osee 9:7): "Know ye, O Israel, that the prophet was foolish and mad [*Vulg.: 'the spiritual man was mad']." Therefore prophecy is not a cognitive perfection.
Objection 4 : Further, just as revelation regards the intellect, so inspiration regards, apparently, the affections, since it denotes a kind of motion. Now prophecy is described as "inspiration" or "revelation," according to Cassiodorus [*Prolog. super Psalt. i]. Therefore it would seem that prophecy does not pertain to the intellect more than to the affections.