A wild and dangerous Tongue

How can words formed from consonants and vowels. 

Come out of a mouth so foul? T

his same mouth is used to sing praise in church. 

But Monday thru Saturday cause a lot of hurt. 

Many beast have man caught and tamed, but why is the tongue such wild game? It's the most dangerous beast to ever live. It's deceptive ways can be used to take or used to give. This very beast beast can be hot as fire and yet cold as ice. Peter used it to deny Jesus thrice.