English Standard Version
"If anyone sins in that he hears a public adjuration to testify, and though he is a witness, whether he has seen or come to know the matter, yet does not speak, he shall bear his iniquity;New International Version
"'If a person sins because he does not speak up when he hears a public charge to testify regarding something he has seen or learned about, he will be held responsible.Catholic Public Domain Version
If a soul will have sinned, and heard the voice of one testifying under oath, and he is a witness because either he has seen it himself, or he is aware of it: if he does not reveal it, he shall carry his iniquity