Daf Yomi - Sukkah 56- Lekavod Shabbos

Masechet Sukkah concludes with a powerful lesson in education. The Gemara states that the utterances of a child in public is a reflection of the opinions of either his father or his mother. What a parent says is the way a child will grow up speaking. If a parent is careful on Shabbos to only talk what is necessary, i.e. words of Torah and singing zemiros, then a child will also conduct himself in this manner. This is why it is important to always say the words lekavod Shabbos kodesh, this is being done for the sake of the Holy Shabbos, as such words will have a great effect on the entire household.