This book includes more than twelve dozen puzzles that feature an interlocking grid with 26 missing letters—one each from A through Z.  To solve the puzzle, you’ll have to precisely insert the letters into the particular spots where they will work. . .it’s something like a letter-based Sudoku game.  Each puzzle is based on a King James Version scripture, with a key word serving as the “starter” for the puzzle.
 
Yep—sometimes, it’s good to be clueless!