ASV: having your behavior seemly among the Gentiles; that, wherein they speak against you as evil-doers, they may by your good works, which they behold, glorify God in the day of visitation.

BBE: Being of good behaviour among the Gentiles; so that though they say now that you are evil-doers, they may see your good works and give glory to God when he comes to be their judge.

DBY: having your conversation honest among the Gentiles, that as to that in which they speak against you as evildoers, they may through your good works, themselves witnessing them, glorify God in the day of visitation.

KJV: Having your conversation honest among the Gentiles: that, whereas they speak against you as evildoers, they may by your good works, which they shall behold, glorify God in the day of visitation.

WEY: Live honourable lives among the Gentiles, in order that, although they now speak against you as evil-doers, they may yet witness your good conduct, and may glorify God on the day of reward and retribution.

WBS: Having your manner of life honest among the Gentiles: that, whereas they speak against you as evil-doers, they may by your good works, which they shall behold, glorify God in the day of visitation.

WEB: having good behavior among the nations, so in that of which they speak against you as evildoers, they may by your good works, which they see, glorify God in the day of visitation.

YLT: having your behaviour among the nations right, that in that which they speak against you as evil-doers, of the good works having beheld, they may glorify God in a day of inspection.
