Leviticus 5:1
“If someone sins by failing to testify when he hears a public charge about something he has witnessed, whether he has seen it or learned of it, he shall bear the iniquity.
Berean Standard Bible
And if a soul sin, and hear the voice of swearing, and is a witness, whether he hath seen or known of it; if he do not utter it, then he shall bear his iniquity.
“‘If anyone sins, in that he hears a public adjuration to testify, he being a witness, whether he has seen or known, if he doesn’t report it, then he shall bear his iniquity.