If a person thinks that he is religious but can’t control his tongue, he is fooling himself. That person’s religion is worthless.
– James 1:26 (GOD’S WORD® Translation (©1995))
I have personally witnessed so called devout Christians shout Hallelujah while in church and barely get outside the doors of the sanctuary and are already cussing. What kind of testimony is that? And who do they think they are fooling? Certainly not God. Control yourself!