Many parents push air with idle threats. Kids have to learn both boundaries and that words have meaning. It makes life much easier with that basic understanding.
Exactly...
We trained our children first time obedience...
If an issue happened, we gave one and only one warning...
They knew we would not ask again...
Boundaries are an important subject
Most parents have no idea how to structure them to be effective...
Picture a funnel with the top being when kids are young, lots of room for them to push your limits, as they get older (teens) they want to expand their horizons in areas maybe not to your liking, friends, time restrictions, places try go... etc...
Most parents close that narrow funnel end to gain control...too late...
The correct way to set boundaries is to invert the funnel with the narrow end when they are young, very little room to move...
As they get older and they start to push out on the funnel, allow them too with controls...
As an example: teenager wants to stay out past ten on the weekends ...
OK...since you have proved yourself to be trustworthy in other areas of your life, we will trust you on this one...be late and you will have lost our trust...