II.3 Ex Nicetæ Catena on Job, cap. xxvi. p. 538.
Observe that the Lord was not wont from the beginning to speak with man; but after that the soul was prepared, and exercised in many ways, and had ascended into the height by contemplation, so far as it is possible for human nature to ascend, then is it His wont to speak, and to reveal His Word unto those who have attained unto this elevation. But since the whirlwind is the producer of the tempests, and Job, in the tempest of his afflictions, had not made shipwreck of his faith, but his constancy shone forth the rather; therefore it was that He who gave him an answer answered him by the whirlwind, to signify the tempest of calamity which had befallen him; but, because He changed the stormy condition of his affairs into one of serene tranquillity, He spoke to him not only by the whirlwind, but in clouds also.