Being a sequel to “Change” by RM & Wale, “Change pt.2” is rather a juxtaposition, than a continuation to its predecessor.

While a single with Whale regarded society and its positive energy, “Change pt.2” is a sarcastic and pessimistic take on the idea of change.

Throughout the chorus RM introduces the common literary technique of repetition, building rhythm by introducing a recurring rhyme scheme (the repetition of a sound at the end of a line).
The metrics (the stressed and unstressed words in a repeating pattern that gives lyrics its musical quality) mirror the metrics in refrain of “forever rain”:

Slow rap, slow jam, slow rain
Everything slow

Ultimately, repeating lines creates emphasis on the constant nature of change.