Tota Trinitas in nobis habitat per gratiam; sed specialiter alicui personae appropriari potest inhabitatio per aliquod aliud speciale donum, quod habet similitudinem cum ipsa persona, ratione cuius persona mitti dicitur.
"The whole Trinity dwells in us by grace; but indwelling can be appropriated specifically to some Person by some other specific gift that has a likeness to that Person and under whose notion the Person is said to be sent."
De veritate, q. 27 a. 2 ad 3