"Yes, one is to be careful of the dangers of the tongue."
DANGERS OF LIES AND CURSING
The tongue is a mighty instrument in communication and speaking. It is used everyday and it speaks usually what is commonly in the heart. Dangers of it can be controlled, but controlled-- even then it requires much restraint. I know that many tongues curse, lie and often with these words they speak out with words that are not true and hurtful to another, and to themselves. A potty mouth as it is also called is related to define cursing or lying is never speaking a vocal word of sweetness.
Having a good conscience in obedience to God is one way to control the speaking with a filty tongue, another is conveying a good heart inside. You'll know a corrupt mouth, often displays corruption of what's inside. Therefore, one is to be aware of their speech in that they display truth, and clean speaking words. Avoid as much as all together using words that speak a lie, or one that utter cursing. For it is dangerous in the keeping of obedience unto the Lord. In all speaking, be aware of what is said, and therefore be eager to listen; slow to speak. Speak the utterance in speech that edifies the Lord of Heaven moreso boldy.