but no human being can tame the tongue. It is a restless evil, full of deadly poison.
OJBBut the Lashon no one of Bnei Adam is able to tame, an uncontrollable ra'ah (evil), full of deadly zuhamah (contamination).
T4Tno person ◄on his own/by himself► is able to control what he says [MTY]. And when people say evil things, it shows that they are unstable/uncontrolled and wicked [MTY]. As the poison of a snake kills people [MTY], we harm others [MET] by what we say.