Conversation so far:
Did they release any christian albums?
their songs have been included on Christian rock compilation CDs and DVDs.
Do they identify as christian?
I definitely don't classify us as a Christian band.
Why are they classified as a christian band?
Over the years, many fans, critics, and other members of the media have consistently characterized Anberlin as a Christian band.
Are they well received as a christian band?
Anberlin has also been repeatedly featured in Christian rock magazine HM (Hard Music, which was originally the fanzine Heaven's Metal).
What else does the media say about the band?
multiple sources list the band as part of the Christian rock genre, and some Anberlin song lyrics do contain Christian references.

Question: Do they sing about christian things?
Self-contained rewrite: Do Anberlin sing about christian things?