Cyrill of Alexandria
In conjunction with celebrations and ineffective offerings, God dismisses the enchanting harmony of musical instruments, directing glorification not towards inanimate objects, but instead bestowing the privilege of such elevated praise upon those whose voices spring forth from a pure spirit, for this form of worship is both beautiful and pleasing in His sight. However, the praises of the Jews, which are expressed through musical instruments, can be seen as borrowed, and resemble an unnecessary and hollow echo that produces a sound devoid of meaning and strength.
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This notion of their musical practice being misguided is underscored by the declaration that they deliver "the song of thy organs," implying that such practices are not ordained by Him, as they lie beyond the scope of the law, and Moses did not speak of them. Consequently, the sound of instruments will not suffice to defend or justify their actions when faced with scrutiny, but shall instead be rendered ineffective before My judgment. The truth emanating from Me, which represents a righteous evaluation of you, will flow like an unimpeded river, to wash away all that is unworthy, just as the waters cascade down from the mountains. The divine judgment, when enacted against them, will serve as an overwhelming and unstoppable torrent. Therefore, it is both beneficial and essential to repent and turn towards righteousness, to avert divine displeasure, not by engaging in fruitless and meaningless offerings, but by singing a melody rooted in genuine wisdom from a good spirit; for it is written, "sacrifice a thank-offering to God" (Ps. 49:14 ff.).