Tradition
St. Augustine
Tractates on the Gospel of John
Tractate 13 › Section 15
15. Evidently, then, my brethren, it profits those men nothing to keep virginity, to have continence, to give alms. All those doings which are praised in the Church profit them nothing; because they rend unity, namely, that “coat” of charity. What do they? Many among them are eloquent; great tongues, streams of tongues. Do they speak like angels? Let them hear the friend of the Bridegroom, jealous for the Bridegroom, not for himself: “Though I speak with the tongues of men and of angels, and have not charity, I have become as sounding brass, or a tinkling cymbal.”
Source: Tractates on the Gospel of John (New Advent)