11 Beloved, I call upon [you], as strangers and sojourners, to keep from the fleshly desires, that war against the soul,
11
Dear friends, I urge you, as foreigners and exiles, to abstain from sinful desires, which wage war against your soul.
12 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.
12
Live such good lives among the pagans that, though they accuse you of doing wrong, they may see your good deeds and glorify God on the day he visits us.
Young's Literal Translation is in the public domain.