This also is a part of the teaching of the Church, that there are certain angels of God, and certain good influences, which are His servants in accomplishing the salvation of men.
OrigenWhen anyone prays, the angels that minister to God and watch over mankind gather round about him and join with him in prayer.
OrigenIf someone considers the prophetic writings with all the diligence and reverence they are worth, while he reads and examines with great care, it is certain that in that very act he will be struck in his mind and senses by some more divine breath and will recognize that the books he reads have not been produced in a human way, but are words of God.
Origen