What basically comprimises the preamble to the constitution

The preamble to the constitution comprises an overview of rules and rights every citizen must respect.

The People of the United States ordained and establish the Constitution of the United States of America for the purpose of forming a more perfect union where justice is established, domestic tranquility is insured, common defense is provided, general welfare is promoted, and blessings of liberty is secured for one and all citizens of the United States of America