THE SECRET GOSPEL OF 'IF' Lost in the text of the Bible is The Gospel of "IF," a biblical doctrine that will determine where you spend eternity. It was never meant to be a "secret;" rather it became a secret with the passage of time and the decline of man. Proving the point, The Gospel of "IF" has been preached since the time of Christ, but chances are you've never heard of it. Just how important is the Gospel to your spiritual life and eternity? Let's put it this way - Satan will do everything in his power to ensure you never read this book.