Perhaps if your church likes to pack in people so closely that they're touching and thinks that it's your duty to God to repeatedly drag yourself to church no matter how sick you are. (The likely index patient apparently attended services 4 times after symptoms started.)

Maybe participation in the holy communion by drinking from a cup of wine shared with the entire congregation isn't the best idea right now.

Afaik none of the churches where it has spread were the sort that has that kind of a practice — more pentecostal or cults. (Cults who knows, they could do that. But pentecostals ime don't much like wine and I've never participated a recreation of the last supper when I've been to a pentecostal church.)

I presume that the alcohol from the wine would not be enough to kill the virus, right?

It's unlikely, wine's alcohol content is only around 13%, you would need about 4 times that to kill the average virus. It would also be on the lip of the cup rather than in the wine.

As a kid in the 90s, my church had a separate line for kids so we could participate too, and we got grape juice.

Communion wine is typically only 12%-18% alcohol by volume, so probably not.

IN a part of Austria, they apparently banned holy water now.