You forgot to add the sentences you are talking about. Nevertheless remember parallelism is used in poetry or prose when some elements are repeated on structure, sound, meter o even meaning.
Here are some examples:
Like father like son.
Easy come, easy go.
“Success is getting what you want. Happiness is wanting what you get.” —Dale Carnegie
“Be who you are and say what you feel, because those who mind don’t matter, and those who matter don’t mind.” ― Bernard M. Baruch