What is brief summary of the preamble?

We the people in order to form a more perfect union, establish justice, ensure domestic tranquility, provide for the common defense, promote the general welfare, and secure the Blessings of Liberty to ourselves and our posterity, do ordain and establish this Constitution for the United States of America.

maybe like: The preamble is a statement declaring what the Constitution will provide for the United States briefly, while still making it clear that the authors of our Constitution were regular people.