John Chrysostom
In another instance, when addressing the matter of nourishment, Christ disregards temptation, instructing us on when to engage with it and when to overlook it. The very illustration He provides reveals His true identity. Why does He not instruct them to draw from their own resources? As mentioned earlier, it serves to demonstrate that He possesses sovereign authority over all and that even the sea is under His dominion. This power was evident when He commanded the sea and allowed Peter to walk upon the waves. He showcases this same authority now, albeit in a different manner, which also induces profound astonishment.
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Indeed, it is no trivial matter to declare that the first fish caught from the depths would yield the necessary tribute, indicating that His command, akin to casting a net into the profound, would secure the fish with a coin. However, it is the work of divine power, beyond comprehension, to command the sea to supply this treasure, illustrating that all creation is subject to Him: even when stirred, it abruptly stilled, and amid the tumult of the waves, it served Him, now providing for the required taxes.