en_tn_condensed/dan/03/11.md

Whoever does not fall down and worship must be thrown into a blazing furnace

This can be stated in active form. Alternate translation: "Soldiers must throw into a blazing furnace anyone who does not lie down on the ground and worship" (See: rc://en/ta/man/jit/figs-activepassive)

fall down

Here "fall down" means "quickly lie down"

blazing furnace

This is a large room filled with a hot fire. See how you translated this in Daniel 3:6.