Hal Lindsey was a prominent American evangelist and Christian writer, best known for his influential 1970 book, The Late, Great Planet Earth. The book popularized dispensationalist eschatology and sold millions of copies, becoming one of the best-selling non-fiction books of the decade. Lindsey's work focused heavily on biblical prophecy, particularly regarding the end times and the state of Israel. Through his numerous books, television programs, and speaking engagements, he became a major voice in American evangelicalism for several decades.