And you shall not profane My holy name, and I shall be hallowed in the midst of the Israelites. I am the LORD Who hallows you…This verse concludes a chapter that lists restrictions on priests and sacrifices. The next chapter lists the Festivals and Netziv offers two reasons why this verse is an appropriate segway. To paraphrase the Talmud, because on the Festivals everyone gathers in great merriment these days are susceptible to sin and therefore we are reminded: you shall not profane My holy name and secondly precisely because Israel gathers on the Festivals there is an opportunity for God to become hallowed in the midst of the Israelites. Everything in life, even the Festivals, are a test and an opportunity for Kiddush HaShem, for hallowing Hashem’s name.