1 Peter 3:16

having a good conscience , so that , when you are slandered , those who revile your good behavior in Christ may be put to shame .

keeping a clear conscience, so that those who speak maliciously against your good behavior in Christ may be ashamed of their slander.

Having a good conscience; that, whereas they speak evil of you, as of evildoers, they may be ashamed that falsely accuse your good conversation in Christ.