I’m going to go out on a limb here – the greatest gospel passage you’ve never studied might be in the book of Zechariah. The Old and New Testaments both end with an apocalypse. Obviously, Zechariah isn’t the last book in the Old Testament but it is the final word on several important themes and it creates a prophetic link with the end of the Bible. It’s possible that Jesus references Zechariah in Matthew 23, one of his fiercest rebukes of the Pharisees, “On you may come all the righteous bloo……