We should actually pay attention to what we normally say or do this is to repel any kind of curse.

Christians should be very careful of how they talk. They should take charge of their actions and not the other way round. Like a law states that whenever you are angry before you say any word, count 1-10. In our anger, the devil is up to stir it up the more and you might likely damage somethings which we later regret when calm.

It's a big deal. One that the devil doesn't want you to know about. What comes out o your mouth can be seen a legal "contract" in the spiritual realm