Incorrect « il est » is used to mean "it is" if the it in question is a specific adjective. since the statement is not directed at a specific person, « c'est » should be used instead. for example, « jean, il est mauvais de trop dormir ! » is correct, because we are speaking to jean directly. in this case, we're talking about it generally being bad to sleep too much. the correct sentence would be « c'est mauvais de trop dormir »
In France, the separated God from government and state so many symbols and subjects in French art do not have Christian or Biblical themes. Some French art might have Christian themes, like some American art, but most artworks after the separation focus more on earthly and human themes.