“Do not go seeking lyrics, as though you could spell out in words anything that will give God pleasure. Sing to him in jubilation. This is what acceptable singing to God means: to sing jubilantly. But what is that? It is to grasp the fact that what is sung in the heart cannot be articulated in words. Think of people who sing at harvest time, or in the vineyard, or at any work that goes with a swing. They begin by caroling their joy in words, but after a while they seem to be so full of gladness that they find words no longer adequate to express it, so they abandon distinct syllables and words, and resort to a single cry of jubilant happiness. Jubilation is a shout of joy; it indicates that the heart is bringing forth what defies speech. To whom, then, is this jubilation more fittingly offered than to God who surpasses all utterance? You cannot speak of him because he transcends our speech; and if you cannot speak of him, yet may not remain silent, what else can you do but cry out in jubilation, so that your heart may tell its joy without words, and the unbounded rush of gladness not be cramped by syllables?” (Saint Augustine)
 Enarrationes in. Psalmos 32.2.8. Transl. by Maria Boulding, The Works of Saint Augustine III/15. 2000, 400-401.