In Gbaya, the notion of treading in mire in Isaiah 10:6 is emphasized with the ideophone rɔ́kɔ́tɔ́-rɔ́kɔ́tɔ́, which refers to walking in very soft mud.
Ideophones are a class of sound symbolic words expressing human sensation that are used as literary devices in many African languages. (Source: Philip Noss)