It’s a bit pointless in the face of tragedy because their belief is not based on any reality. Unlike being smug about, say, the geopolitical history of 9/11, there is no “facts” you can point to regarding god and bible when someone says “god be with you” when 9/11 happens.

What are you going to do? Cite Josiah 3:19 or something? None of it is based on reality and you will just make them double down. These days a lot of voters are glued to their parties like religions, but still having the concrete material facts will be a more productive use of your time than some philosophical musings. Maybe wait until they’re no longer sad and getting smug about their religion, then knock them down a peg with whatever bullshit you got because these people don’t get any training on how to defend their faith outside of, well, having faith.