Roman Catechism 25.7

Chapter 25 — Part III: The Decalogue — The Second Commandment

Section 7. In the part which commands us to honour the name of God, the command, as the pastor should show the faithful, is not directed to the letters or syllables of which that name is composed, or in any respect to the mere name; but to the meaning of a word used to express the Omnipotent and Eternal Majesty of the Godhead, Trinity in Unity Hence we easily infer the superstition of those among the Jews who, while they hesitated not to write, dared not to pronounce the name of God, as if the divine power consisted in the four letters, and not in the signification.