Matthew 15:17 - 20

Don't you understand?
Anything that goes into a person's mouth goes into his stomach and then out of his body.
But the things that come out of the mouth come from the heart, and these are the things that make a person unclean.
For from his heart come the evil ideas which lead him to kill, commit adultery, and do other immoral things; to rob, lie and slander others.
These are the things that make a person unclean ..............

Sometimes, we don't mean to say things that will hurt others. Most of the time, we thought we meant well. However, what we want to mean in our heart, will surely reflects in our words.
So, watch out!
Pray that we are all careful with what we think, least we offend our Maker too!