"Trial by Fire" refers to a method of testing someone's character or abilities through a challenging or dangerous situation. Historically, it often involved a physical ordeal, such as walking over hot coals, to prove innocence or bravery. The concept suggests that true strength and integrity are revealed under pressure. In modern usage, "Trial by Fire" can describe any difficult experience that tests a person's skills or resolve. It is commonly used in various contexts, including business, sports, and personal development, where individuals face significant challenges that ultimately help them grow and improve.