Good News Translation
Anyone who takes oaths all the time is sinful to the core, and punishment is never far away from his household. If he fails to fulfill his oath, he is guilty. If he ignores his oath, he is twice as guilty. If his oath was insincere in the first place, he cannot be pardoned and will have a house full of trouble.

Contemporary English Version
The wicked make promises with God as their witness, but when a promise is broken, they just explain that it was made by mistake. Or they forget it on purpose, which means that they are twice as guilty. And if they lied in God's name, they will not be forgiven and their family is doomed. *

Douay-Rheims Bible
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.

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.

Sirach 23:9
Let not thy mouth be accustomed to swearing: for in it there are many falls.

Sirach 23:10
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.

Sirach 23:12
A man that sweareth much, shall be filled with iniquity, and a scourge shall not depart from his house.

Sirach 23:13
And if he make it void, his sin shall be upon him, and if he dissemble it, he offendeth double: