Baltimore catechism says:
Q. 1220. Is it sinful to use the words of Holy Scripture in a bad or worldly sense?
A. It is sinful to use the words of Holy Scripture in a bad or worldly sense, to joke in them or ridicule their sacred meaning, or in general to give them any meaning but the one we believe God has intended them to convey.
Q. 1218. What do you mean by taking God's name in vain?
A. By taking God's name in vain I mean taking it without reverence, as in cursing or using in a light and careless manner, as in exclamation.
Q. 1219. What are we commanded by the second Commandment?
A. We are commanded by the second Commandment to speak with reverence of God and of the saints, and of all holy things,
take note that priests and consecrated people are sacred persons.