Article continues below advertisementErika Kirk is opening up about the final message her late husband, Charlie Kirk, left behind through his new book.The slain right-wing activist's last work, Stop, In the Name of God: Why Honoring the Sabbath Will Transform Your Life, is described as a "manifesto against the machine of modern life," urging readers to "stop in the name of God" and truly honor the Sabbath. Winning Team Publishing said Charlie was "fiercely proud of it."Article continues below advertisementSource: Fox NewsErika Kirk shared the meaning behind Charlie Kirk's final book.