I looked up the wiki article on the flag. It looks like it is a Christian symbol. At least according to the article.
“The Fleurdelisé takes its white cross over a blue field from certain French flags of the Kingdom of France, namely the French naval flag as well as the French merchant flag. Its white fleurs-de-lis (symbolizing purity) and blue field (symbolizing heaven) come from a banner honouring the Virgin Mary;[6]
I looked up the wiki article on the flag. It looks like it is a Christian symbol. At least according to the article.
“The Fleurdelisé takes its white cross over a blue field from certain French flags of the Kingdom of France, namely the French naval flag as well as the French merchant flag. Its white fleurs-de-lis (symbolizing purity) and blue field (symbolizing heaven) come from a banner honouring the Virgin Mary;[6]