I would agree that churches do not always respond well to what they consider to be virtuosic music. Find out a little about the type of service: if a contemporary service, you need to look for more contemporary Christian music to play. For a standard service, look at the hymn arrangements of Cindy Berry, Marilyn Ham, James Koertz and Carol Tournquist... James Koertz has a nice website where you can download arrangements: some free, some paid.
If it is contemporary service, I can't offer much advice, because that is not my focus but you might want to do a search for 'contemporary Christian music'. I know that Mark Hayes and Carol Tournquist write some arrangements. 'You Lift Me Up', and 'On Eagles Wings' are two that are familiar to me and I like... but the genre is broad, and I don't have experience with most of it.
Your focus should not be on virtuosic classical: I have played simple Bach (Prelude in C, Jesu, Joy of Man's Desiring, and some simple Field nocturnes), but have never considered playing a Chopin Nocturne. Maybe this is just me, but I never thought it would be well received by the congregation.
You might want to look at 'The Lord's Prayer' arranged for piano solo... this would be acceptable in just about every service, regardless of the denomination or the type.
I agree to look at the liturgical season for the denomination for the playing... the internet is a great resource for that.
You don't want to be remembered as 'that weird piano guy that played inappropriate music'. .. they will not know or remember how well you played something if they consider the music inappropriate for their particular type of service.
Edited to add: As a point of reference, the protestant church of my childhood would have been appalled at classical repertoire for the offertory, but the one where I attend now would have no problem with it. When you make the arrangement to play, I would ask 'how is classical repertoire perceived at this church'? You will get an answer that will help guide you.
A lot to think about.