For the phrases “their throats are open graves; they flatter with their tongues,” see Romans 3:13.

Note that this quote in the New Testament is not taken from the Hebrew Bible but from the Greek Septuagint (LXX) which translates into English as “The spirit of the Lord is upon me, because he has anointed me; he has sent me to bring good news to the poor, to heal the brokenhearted, to proclaim release to the captives and recovery of sight to the blind.'” (Translation by NETS — for the Greek version see the title’s tooltip)

In Gbaya, the notion of an open throat is emphasized with mgbóm-mgbóm, an ideophone that designates an open object such as a gaping mouth.

Ideophones are a class of sound symbolic words expressing human sensation that are used as literary devices in many African languages. (Source: Philip Noss)
their throats are open graves;