In Gbaya, the notion of the soft rain that waters the grass in Psalm 72:6 is emphasized with mbɛlɛlɛ, an ideophone used to describe something fine, silky, soft, and mbul-mbul, another ideophone that refers to something that falls very finely.
Ideophones are a class of sound symbolic words expressing human sensation that are used as literary devices in many African languages. (Source: Philip Noss)