John Chrysostom
Chrysostom and Olympiodorus refer to these as treasuries, not in the sense of mere storage, but as a demonstration of divine provision, revealing them at His discretion. "Have you seen," He asks, "how I prepare snow and hail when they are unseen? Or can you wield them against your foes, as I can?" This illustrates the purposeful timing of His actions—events do not occur randomly but are manifested at the appropriate moment. He employs snow and hail when He chooses to bring judgment upon adversaries. He then elaborates on other natural phenomena—such as rain, frost, and winds.
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"Have you entered the treasuries of snow and observed the storehouses of the sea?" His intent is not simply to indicate the existence of these reserves, but to emphasize that God has sovereign control over them, drawing forth as needed. Are they reserved for a time when His enemies will face Him during conflict? This highlights His purposeful timing, demonstrating that occurrences unfold at the right moment rather than by chance. He then continues to discuss other elements of nature, including rain, frost, and the southern winds.