Now in neither of these ways are the blessed remote; wherefore they cannot be called prophets.
Reply Obj. 1: This vision of Moses was interrupted after the manner of a passion, and was not permanent like the beatific vision, wherefore he was as yet a seer from afar. For this reason his vision did not entirely lose the character of prophecy.
Reply Obj. 2: The divine revelation is made to the angels, not as being far distant, but as already wholly united to God; wherefore their revelation has not the character of prophecy.
Reply Obj. 3: Christ was at the same time comprehensor and wayfarer [*Cf. III, QQ. 9, seqq.]. Consequently the notion of prophecy is not applicable to Him as a comprehensor, but only as a wayfarer.
Reply Obj. 4: Samuel had not yet attained to the state of blessedness. Wherefore although by God's will the soul itself of Samuel foretold to Saul the issue of the war as revealed to him by God, this pertains to the nature of prophecy. It is not the same with the saints who are now in heaven. Nor does it make any difference that this is stated to have been brought about by the demons' art, because although the demons are unable to evoke the soul of a saint, or to force it to do any particular thing, this can be done by the power of God, so that when the demon is consulted, God Himself declares the truth by His messenger: even as He gave a true answer by Elias to the King's messengers who were sent to consult the god of Accaron (4 Kings 1).
It might also be replied [*The Book of Ecclesiasticus was not as yet declared by the Church to be Canonical Scripture; Cf. I, Q. 89, A. 8, ad 2] that it was not the soul of Samuel, but a demon impersonating him; and that the wise man calls him Samuel, and describes his prediction as prophetic, in accordance with the thoughts of Saul and the bystanders who were of this opinion. _______________________
SIXTH ARTICLE [II-II, Q. 174, Art. 6]
Whether the Degrees of Prophecy Change As Time Goes On?
Objection 1: It would seem that the degrees of prophecy change as time goes on. For prophecy is directed to the knowledge of Divine things, as stated above (A. 2). Now according to Gregory (Hom. in Ezech.), "knowledge of God went on increasing as time went on." Therefore degrees of prophecy should be distinguished according to the process of time.
Obj. 2: Further, prophetic revelation is conveyed by God speaking to man; while the prophets declared both in words and in writing the things revealed to them. Now it is written (1 Kings 3:1) that before the time of Samuel "the word of the Lord was precious," i.e. rare; and yet afterwards it was delivered to many. In like manner the books of the prophets do not appear to have been written before the time of Isaias, to whom it was said (Isa. 8:1): "Take thee a great book and write in it with a man's pen," after which many prophets wrote their prophecies. Therefore it would seem that in course of time the degree of prophecy made progress.