From the given options, select the figure of speech (Poetic Device) used in the expression –

Faith unfaithful parted the lowers

Oxymoron

The figure of speech used in the expression "Faith unfaithful parted the lowers" is OPTION 4- Oxymoron.

Here's why:

* **Simile:** A simile uses "like" or "as" to compare two things that are not alike. There's no comparison introduced here.
* **Personification:**  Personification gives human qualities to non-human things. Here, "faith" is not being given a human quality.
* **Pun:** A pun is a play on words that have similar sounds but different meanings. There's no wordplay involved in this expression.
* **Oxymoron:** An oxymoron combines opposite words to create a paradox or emphasize a contradiction. "Faith unfaithful" perfectly fits this definition. It highlights the contradiction of faith being unfaithful.