Janus Parallelism

Janus Parallelism describes a literary device in which a middle stich of poetry contains a pun, which in one of its meanings parallels the line that precedes it and in another, parallels the line that follows. Janus Parallels in extra-biblical texts of the ancient Near East (including Sumerian, Akkadian, Egyptian, Arabic, and Medieval Hebrew).

Example: הניצנים נראו בארץ עת הזמיר הגיע וקול התור נשמע בארצנו