I once had a work experience at a supermarket. I was working with someone who talked about how he was drunk once while skiing and how he went to hang out with some girls in their accommodation and partied or something like that once, when he had vacation at a ski resort. He also encouraged me to work out at a gym, since girls like that, or something like that.
Did I sin because I didn’t rebuke him or tell him that as a Christian I don’t get drunk, or have sexual relations with girls without marriage or similar? I thought of doing this, it would be an opportunity to indirectly point him to repentance. However I failed to do this, because I thought how my relation with him as my coworker would be affected, or how my work experience would be affected, or how my chances to get a summer job there this summer.