The archbishop then explains that God did not fix the earth’s stability as an artisan would, with compass and level, but as the Omnipotent, by the might of His command. If we would understand why the earth is unmoved, we must not try to measure creation as with a compass, but must look to the will of God: “voluntate Dei immobilis manet et stat in saeculum terra.” And again Ambrose asks, Why argue as to the elements which make the heaven? Why trouble oneself with these physical inquiries? “Sufficeth for our salvation, not such disputation, but the verity of the precepts, not the acuteness of argument, but the mind’s faith, so that rather than the creature, we may serve the Creator, who is God blessed forever.”[75] Thus with Ambrose, the whole creation springs from the immediate working of God’s inscrutable will. It is all essentially a miracle, like those which He wrought in after times to aid or save men: they also were but operations of His will. God said _Fiat lux_, and there was light. Thus His will creates; and nature is His work (_opus Dei natura est_). And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters; and it was so. “Hear the word, Fiat. His will is the measure of things; His word ends the work.” The division of the waters above and beneath the firmament was a work of His will; just as He divided the waters of the Red Sea before the eyes of the Jews in order that those things might be believed which the Jews had not seen. He could have saved them by another means. The fiat of God is nature’s strength (_virtus_) and the substance of its endurance (_diurnitatis substantia_) so long as He wishes it to continue where He has appointed it.[76] According to this reasoning, the miracle, except for its infrequency, is in the same category with other occurrences. Here Ambrose is fully supported by Augustine. With the latter, God is the source of all causation: He is the cause of usual as well as of extraordinary occurrences, _i.e._ miracles. The exceptional or extraordinary character of certain occurrences is what makes them miracles.[77] Here are fundamental principles of patristic faith. The will of God is the one cause of all things. It is unsearchable. But we have been taught much regarding God’s love and compassionateness, and of His desire to edify and save His people. These qualities prompt His actions toward them. Therefore we may expect His acts to evince edifying and saving purpose. All the narratives of Scripture are for our edification. How many mighty saving acts do they record, from the Creation, onward through the story of Israel, to the birth and resurrection of Christ! And surely God still cares for His people. Nor is there any reason to suppose that He has ceased to edify and save them through signs and wonders. Shall we not still look for miracles from His grace?