You may have gotten it from the U.S. Constitution which says:
"We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, 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."
View attachment 128767
https://www.vocabulary.com/dictionary/posterity
I don't think old Tommy Jefferson wrote that for Abdula Ackbar's baby she was able to squeeze out at the Houston Inter-Continental Holiday Inn on a layover.
Did he write it for Ben Carson?
What about Ted Cruz?
Did he write it for me? My ancestors immigrated here after the writing of the declaration.
Were your ancestors part of the 13 original colonies?