The enemies of the LORD can't come up with anything creative or original so they try to blasphemously mock and mimic the one true God. That blood writing on the wall is an illustration. This is the original 'writing on the wall'. It warned of the imminent doom of a hostile God hating rebellious pagan king:
That is so true 444. These evil forces copy and mock our True King.
“For we wrestle not against flesh and blood, but against principalities and powers; against the rulers of the darkness of this world, against spiritual wickedness in high places. “
Eph 6:12