Why do we put mezuzot on our doorposts?

this is a muuza let me tell you a little bit about it the Torah tells us to put a muuza on all of our doorways not just on the front doorway of your home but on every single doorway of your home the T says put a mza our sages say that a mza is a protection for everything that's found inside of the mauza so you put the Maza on the most exterior part of the doorway so that everything inside is under its protection the Tomlin says that normally Kings stay ins side and have their servants guard on the outside so they're the ones who are protected with the with the Jewish people and Hashem it is the opposite the Jewish people are in their homes and Hashem with his mza with the commands of muza stand on the absolute outside guarding the Jewish people on the inside