The Rev. Billy Graham has issued a written warning to America's churches: "Prepare for persecution." The renowned preacher and founder of the Billy Graham Evangelistic Association penned a commentary that was posted on his website last week and is slated to appear in the November edition of Decision magazine. In the magazine, Graham notes that the American church has been largely unfamiliar with persecution, writing that this "immunity to persecution that Christians in our country have experienced in the past two or three centuries is unusual." "As a whole, our nation does not know what privation is. We do not...