I doubt it is a Christian that wrote that. Probably some leftist nutcase that is not only anti-gun, but anti-Christian as well, trying to kill two birds with one stone. And they may not even be a neighbor as evidenced by the phrasing "It has come to my attention."
Ignore it unless you can find the author, in which case question them nicely to find out where they are really coming from. In the unlikely event they are Christian, introduce them to some Christian gun folks/organizations/websites/clubs, etc.
And follow the advice of those recommending covering up the sticker with one from GOA or JPFO.
No King but Jesus, no President but Ron Paul
Want DP delivered to your inbox daily? Subscribe here: