According To The Teaching of St. Thomas Aquinas
IV
Finally, how can we fail to recognize a special presence of the Divinity (were it only as the efficient Cause), in the prophets to whose minds the Holy Ghost unveiled the future, and in the other inspired writers, as well as in the Apostles whom He assisted and enlightened; in the saints, who_receive more abundant graces; in the Church, which He safeguards from error, sanctifies and defends against her enemies: in a word, wheresoever His operation is more plainly felt, wheresoever His favors are distributed more lavishly, in the natural order as well as in the order of grace. And because it is in heaven that God's action displays itself with the greatest splendor, because it is there that His Divine bounty becomes, as it were, forgetful of all limitation— it is there, according to St. Bernard, that God is present in so special a manner, that by comparison in other places He is not present at all. This is why we pray in the Lord's prayer: "Our Father, Who art in heaven"