You are correct in that it does not say "Christian" but if you are "Christian" then the command still applies.<quoted text>First... Let me show you just how ignorant you are...
I mostly wear Cotton, not that this matters!
Romans 1 is what we gentiles need to read, AND
"It says if a city isn't Christian"...
Guess what? It does NOT say that, and I could just let you figure it out for yourself, but I fear you don't have that kind of time to waist...
So... How many Christians were there back then???
Why?; Christ had not came on scene before He was born!
Not in the form of Christ anyways...
Christian means Follower of Christ!
You have two choices in your life...
Righteousness unto Life, or
Sin unto Death!
The command is in Deuteronomy and it says is a town tries to sway you from your god, destroy it. Deuteronomy 13 6-10.
So if your god is the Christian god, the command applies. So you are just nit picking the substance of this debate. Splitting hairs.