Congratulations to my Aunt Wilma Heilman for winning Christmas Mystery 2016 with the first correct answer: Isaiah 35:8 !

Isaiah 35:8:
  "A highway shall be there,
    and it shall be called the Holy Way;
the unclean shall not travel on it,
    but it shall be for God’s people;
    no traveler, not even fools, shall go astray." (NRSV)

A complete explanation of all the clues will be posted in due course.