John Henry Holmes—a 19th-century electrical engineer and inventor from Newcastle, England—is credited with inventing the light switch in 1884. Never before could an individual so quickly turn something on or off. Or is that true? The apostle Peter utilized a type of switch in Galatians 2. When he visited the Gentile city of Antioch, “he would eat with the Gentiles” (Gal. 2:11-12), for his fellow…