I answer that, We may consider two things in a person to whom honor is given: the person himself, and the cause of his being honored. Now properly speaking honor is given to a subsistent thing in its entirety: for we do not speak of honoring a man's hand, but the man himself. And if at any time it happen that we speak of honoring a man's hand or foot, it is not by reason of these members being honored of themselves: but by reason of the whole being honored in them. In this way a man may be honored even in something external; for instance in his vesture, his image, or his messenger.
The cause of honor is that by reason of which the person honored has a certain excellence. for honor is reverence given to something on account of its excellence, as stated in the SS, Question [103], Article [1]. If therefore in one man there are several causes of honor, for instance, rank, knowledge, and virtue, the honor given to him will be one in respect of the person honored, but several in respect of the causes of honor: for it is the man that is honored, both on account of knowledge and by reason of his virtue.
Since, therefore, in Christ there is but one Person of the Divine and human natures, and one hypostasis, and one suppositum, He is given one adoration and one honor on the part of the Person adored: but on the part of the cause for which He is honored, we can say that there are several adorations, for instance that He receives one honor on account of His uncreated knowledge, and another on account of His created knowledge.
But if it be said that there are several persons or hypostases in Christ, it would follow that there would be, absolutely speaking, several adorations. And this is what is condemned in the Councils. For it is written in the chapters of Cyril [*Council of Ephesus, Part I, ch. 26]: "If anyone dare to say that the man assumed should be adored besides the Divine Word, as though these were distinct persons; and does not rather honor the Emmanuel with one single adoration, inasmuch as the Word was made flesh; let him be anathema."