, dulia being the Greek for servitude.

Reply Obj. 1: Just as religion is called piety by way of excellence,
inasmuch as God is our Father by way of excellence, so again latria
is called dulia by way of excellence, inasmuch as God is our Lord by
way of excellence. Now the creature does not partake of the power to
create by reason of which latria is due to God: and so this gloss
drew a distinction, by ascribing latria to God in respect of
creation, which is not communicated to a creature, but dulia in
respect of lordship, which is communicated to a creature.

Reply Obj. 2: The reason why we love our neighbor is God, since that
which we love in our neighbor through charity is God alone. Wherefore
the charity with which we love God is the same as that with which we
love our neighbor. Yet there are other friendships distinct from
charity, in respect of the other reasons for which a man is loved. In
like manner, since there is one reason for serving God and another
for serving man, and for honoring the one or the other, latria and
dulia are not the same virtue.

Reply Obj. 3: Movement towards an image as such is referred to the
thing represented by the image: yet not every movement towards an
image is referred to the image as such, and consequently sometimes
the movement to the image differs specifically from the movement to
the thing. Accordingly we must reply that the honor or subjection of
dulia regards some dignity of a man absolutely. For though, in
respect of that dignity, man is made to the image or likeness of God,
yet in showing reverence to a person, one does not always refer this
to God actually.

Or we may reply that the movement towards an image is, after a
fashion, towards the thing, yet the movement towards the thing need
not be towards its image. Wherefore reverence paid to a person as the
image of God redounds somewhat to God: and yet this differs from the
reverence that is paid to God Himself, for this in no way refers to
His image.
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FOURTH ARTICLE [II-II, Q. 103, Art. 4]

Whether Dulia Has Various Species?

Objection 1: It seems that dulia has various species. For by dulia we
show honor to our neighbor. Now different neighbors are honored under
different aspects, for instance king, father and master, as the
Philosopher states (Ethic. ix, 2). Since this difference of aspect in
the object differentiates the species of virtue, it seems that dulia
is divided into specifically