JUST THINK ABOUT IT!
The first mitzvah of Kedoshim instructs us ‘to be holy because HaShem your G.D is holy’. The Torah is stating that HaShem’s holiness is the cause for us to be holy. Holiness in this context refers to being removed from the materialism of this world. The notion of HaShem’s holiness is that He is removed from the material world, He exists outside of this universe. To be more accurate, HaShem exists outside the spiritual realms as well; He created those realms just as He created the material world. HaShem is therefore Absolute Holiness. The question we must ask is how can HaShem’s holiness be the reason for us to be holy? HaShem’s holiness is intrinsic and such holiness within the sphere of the human condition is absurd. We understand that the Torah would not instruct us to be creators because HaShem is a creator. Such a mitzvah would be absurd since creation is the exclusive domain of HaShem. In a similar way HaShem’s holiness cannot be the reason for Man to be holy since His holiness is of a totally different nature.