BSB
keeping a clear conscience, so that those who slander you may be put to shame by your good behavior in Christ.
AKJV
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.
CPDV
But do so with meekness and fear, having a good conscience, so that, in whatever matter they may slander you, they shall be confounded, since they falsely accuse your good behavior in Christ.
ERV
having a good conscience; that, wherein ye are spoken against, they may be put to shame who revile your good manner of life in Christ.
NHEB
having a good conscience; so that when they speak evil against you, they may be put to shame who slander your good manner of life in Christ.
SMT
Having a good consciousness; that, in what they speak evil against you, as doing evil, they threatening your good turning round in Christ should be ashamed.