Look, if you were going up to the people you know smoke or deal and talking to them candidly about your concern for their souls or religious standing because you believe weed is their false idol, that would be more Christlike than reporting them to authorities. By “lying low” and trying to not get caught, you’re being just as sinful as you believe they are being by smoking/dealing weed.

I’d suggest reading the Bible more, clarifying your Pastor’s original intent WITH your Pastor, doing some research, and letting people live their lives until you’re mature enough to confront the people involved directly.

Religion aside/secular response: yes, you’re the asshole.