Sirach 23:9-11

Douay-Rheims 1899 American Edition

⁹ Let not thy mouth be accustomed to swearing: for in it there are many falls.

¹⁰ And let not the naming of God be usual in thy mouth, and meddle not with the names of saints, for thou shalt not escape free from them.

¹¹ For as a slave daily put to the question, is never without a blue mark: so every one that sweareth, and nameth, shall not be wholly pure from sin.