Clothing and Symbolism
A man is forbidden to wear woman’s clothing, and vice-versa. We can suggest that wearing the wrong clothing is also a symbol that a man should act like a man, as it says: HE shall be the dominant one, without looking at his wife as if she is a superior. And she should wear HER clothing, i.e. a woman shouldn’t look down at her husband; she should have Hachna'a (this is related to Tz'niyus and Eidelkeit) and work hard to respect & appreciate him. Despite this guideline, sometimes things can work out with Hashem’s help, despite people doing everything the wrong way.
We can also suggest, that besides the Z'nus that wearing the opposite clothing causes (Rashi) it is a Chisaron because it is going against the order of Hashem’s world, and causes chaos.
Bilbul and Mabul
Soon after this Passuk, we have three kinds of forbidden mixtures, which can also be the same message: Don’t mix up Hashem’s world! And afterwards are many Parshiyos which talk about Arayos; all these symbolize “Bilbul” which causes “Mabul”.
Going against the system of Hashem’s world is a form of Chutzpa, where a person isn’t satisfied with Hashem’s world. This can include those who aren’t Sameach B'chelko; albeit even in Ruchaniyus. A person has to be Mach'nia to Hashem’s rules, and accept everything in his life. Yet, there is a time and place to daven and change situations, like Leah Imeinu who went against her “fate” (to be married to Eisav) which was Yitzchok Avinu’s Ratzon. And we also have Talmud “Bavli”, which means: being “mixed”. (Gemara).
Every evil thing can have a good side to it, and you need a Rebbe for all your decisions. And vice-versa, there are loads of seemingly “beautiful” things going on in this world, like being warm and friendly to a person who... can be a bad influence on you.
