Whether a character is a spiritual power?

Objections

Objection 1 : It seems that a character is not a spiritual power. For "character" seems to be the same thing as "figure"; hence (Heb. 1:3), where we read "figure of His substance, "for "figure" the Greek has {charakter}. Now "figure" is in the fourth species of quality, and thus differs from power which is in the second species. Therefore character is not a spiritual power.
Objection 2 : Further, Dionysius says (Eccl. Hier. ii): "The Divine Beatitude admits him that seeks happiness to a share in Itself, and grants this share to him by conferring on him Its light as a kind of seal." Consequently, it seems that a character is a kind of light. Now light belongs rather to the third species of quality. Therefore a character is not a power, since this seems to belong to the second species.
Objection 3 : Further, character is defined by some thus: "A character is a holy sign of the communion of faith and of the holy ordination conferred by a hierarch." Now a sign is in the genus of "relation," not of "power." Therefore a character is not a spiritual power.
Objection 4 : Further, a power is in the nature of a cause and principle (Metaph. v). But a "sign" which is set down in the definition of a character is rather in the nature of an effect. Therefore a character is not a spiritual power.