I remember reading about the tragic death of John Allen Chau, a 27-year-old missionary, in 2018. Chau died on North Sentinel Island, 500 miles east of India in the Bay of Bengal. This small island is inhabited by only 50 to 150 people, descendants from Stone Age migrants who settled there 50,000 years ago.

The Sentinelese are the world’s most isolated people. No one even knows their language. Chau, in his diary, wrote, “Lord, is this island Satan’s last stronghold where none have heard or even…