I can understand how you think like that. Most often when I am looking at religious art I can see that it is being used as propaganda to move people. For example in Cusco they have Jesus' last supper, it was painted in the 1600's when the Spanish were using the local painters to make religious art, there is a Guinea pig used, which is their local delicacy. This is both art and propaganda. It is a lovely painting. I have it as a refrigerator magnet.