The mouth of the righteous is a fountain of life. PROVERBS 10:11
It didn't happen often. I only remember hearing it on a couple of occasions. But I guarantee you that in those rare moments when my father let loose with a foul word, it made a deep impression on me. It shocked and surprised me.
If you hope to control the wild tongues in your family, you must first clean up the words that flow from your own. The way you speak to each other, and to your children, must set the course. If you speak respectfully to one another, you can reasonably expect your children to do the same.
What kind of boundaries have you chosen to set on your speech? Cursing is clearly wrong, of course, but what about slang words that are right on the edge of foul language? What about other toxins of the tongue, like gossiping and criticizing people behind their backs?
Never forget that mutual respect is the foundation of all healthy relationships. The way we relate to each other as a couple is the best model for helping children learn the pleasing use of the tongue