Parallelism

Parallelism - similarity of grammatical structure in a set of words in phrases, clauses, or sentences

Example:
"Let every nation know, whether it wishes us well or ill, that we shall pay any price, bear any burden, meet any hardship, support any friend, oppose any foe to assure the survival and the success of liberty."
- John F. Kennedy, Inaugural Address


http://www.americanrhetoric.com/figures/parallelism.htm