Thomas Aquinas, on Ps 18:4

“There are no speeches nor languages, where their voices are not heard.”

“Likewise, an impediment to teaching is the diversity and remoteness of place, because teaching sometimes does not reach remote parts; but it is not so with this teaching, because "Their sound has gone forth into all the earth," namely of the heavens, or of the apostles, because everywhere is the teaching by which the heavens instruct. But it is better said of the apostles, because he says "has gone forth," not "they went forth" -- "the sound," that is, the fame, "and to the ends of the world their words." Is. 12: "Sing to the Lord, for he has done great things; announce this in all the earth": Mt. 28: "Going, teach all nations." And therefore he says, "To the ends of the world their words": because the sound reaches to remote places, and the words to nearby places. But it is not so with the apostles; rather, even the words, that is, the distinct sound, reached to the ends of the earth, whether by some prophecy or by the fame of miracles.”

Imported from an open dataset — not yet checked against the printed edition.