Lyric discussion by question_the_book 

Cover art for Come Join Us lyrics by Bad Religion

So you say you got to know why the world goes round "And you can't find the truth in the things you've found And you're scared shitless 'cause evil abounds

Come join us" - relaties to how the christian churches find the weak and scare them into beliving in God so they can 'save them' a.k.a. - they got another costomer.

So in my view, its about how churches scare people into becoming paying members.