Question Two of Chapter Three of the Second Decade
Whether the guardian angels of souls, when sent, enjoy their happiness in heaven
It is asked how angels are said to be sent for the guardianship of human beings, or for another operation, when they are always in heaven seeing the face of the Father, according to Matthew, chapter 18.
To this it is answered as follows: a new sending of angels for the guardianship of a human being is for an angel to acquire a new place, a new mode, and a new where; to be limited and bound anew; to guard; to exercise the office of a guardian; and to procure that human being’s salvation, especially by illuminating him, appearing, performing miracles, or instructing the human being in some other similar manner.
And this sending posits mutability in the angel, in contrast to the sending of the divine persons to us. They are said to be sent not as though by acquiring a new place or a new where, because they are everywhere, since they are one God. Rather, they are said to be sent anew insofar as they produce a new effect in creatures without mutability in themselves, and acquire a new mode according to which they had not previously existed: as the Son through the assumption of flesh, and the Holy Spirit through a new sanctification.
Therefore, the angels sent to us are said always to be in heaven seeing the face of the Father, not because they are always in heaven locally. Rather, they are said always to be in heaven through fruition, because wherever they are, they never cease to enjoy God and to see God, since to enjoy is an act of the will.
Whence Gregory says in the book of the Moralia: “The angels go forth outwardly in such a way that they are not deprived of the joys of inward contemplation.”
Nor does their withdrawal from the empyrean heaven introduce any indignity or diminish their glory.
Thus also demons, although they are not actually bound in the place of hell, are nevertheless said, wherever they go, to carry the fire of Gehenna with them, as is said in the Gloss upon chapter 3 of James, as will be stated below in the Third Decade.
These things are from theological works and Rainerius.
Addition
Take notice, however, that angels are said to be in a place not circumscriptively but definitively.