Leviticus 5:1

And if a soul sin, and hear the voice of swearing, and he is a witness or has seen or been conscious, if he do not report it, he shall bear his iniquity.

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.