Traveling on a plane next to a salesman, Billy Graham asked him, "Are you paid anything for all the swearing you do?" "No," was the startled reply, "I do it for nothing." "Nothing?" cried the famous preacher. "You work cheap! You throw aside your character as a gentleman, inflict pain on your friends, break the Lord's commandments, and endanger your own soul - and all for nothing! You certainly work cheap - TOO CHEAP!"
Yes, swearing is not only a "cheap" practice in many ways, but it is also a terrible sin which grieves the heart of God!