In Gbaya, the notion of “my inmost being yearning” in Song of Songs 5:4 is described as a pounding heart (lit. “liver”) emphasized with mgbut-mgbut, an ideophone used to describe the pounding feeling inside one’s chest.

Ideophones are a class of sound symbolic words expressing human sensation that are used as literary devices in many African languages. Since the subject matter of Songs of Songs is particularly conducive to the use of ideophones, there are a total of 30 ideophones in the Gbaya Bible in that short biblical book alone. (Source: Philip Noss)

See also heart is beating wildly.