Your mouth?
The Lord told his disciples it is not what goes in the mouth that defiles a person, but what comes out of your mouth.
When we speak words, without considering the possible cause-and-effect, we put our self in jeopardy. When you draw a line in the sand, or given ultimatums and one you challenge them, and in so doing caused him to reflect, and make choices and decisions. that they otherwise would not make. This also says your path determines where you walk concerning this issue. There is destruction in the mouth when it pours forth from an iniquitous heart.
Let us, then, be careful, walking circumspectly as to not cause us to leave our path or to cause others to do the same. May the Lord of the Lord bless your day and guide and keep you.