The document discusses the biblical "Day of the Lord" and proposes that September 2015 will mark the beginning of this series of prophesied end times events. It outlines evidence from the book of Daniel that points to September 2015 being a turning point, specifically passages that mention 2,300 days or years. The document analyzes interpretations of these passages by figures like William Miller and the Scofield Bible to support interpreting the 2,300 days as years indicating the start of the Day of the Lord in September 2015.