They are mighty and prompt to fulfil the will of the Deity, and their nature is endowed with such celerity that wherever the Divine glance bids them there they are straightway found. They are the guardians of the divisions of the earth: they are set over nations and regions, allotted to them by their Creator: they govern all our affairs and bring us succour. And the reason surely is because they are set over us by the divine will and command and are ever in the vicinity of God Dionys., De Cœl. Hier., ch. 9; Greg., Orat. 34..