the fact that shakespeare was a playwright is sometimes so funny to me. just the concept of the "greatest writer of the English language" being a random 450-year-old entertainer, a 16th cent pop cultural sensation (thanks in large part to puns & dirty jokes & verbiage & a long-running appeal to commoners). and his work was made to be watched not read, but in the classroom teachers just hand us his scripts and say "that's literature"
just...imagine it's 2450 A.D. and English Lit students are regularly going into 100k debt writing postdoc theses on The Simpsons screenplays. the original animation hasn't even been preserved, it's literally just scripts and the occasional SDH subtitles.txt. they've been republished more times than the Bible
crowley used the metal tool in season 1 to start time, and we learn that he's used it first to start space. to create the stars -- he still remembers how. he still remembers all of heaven's passwords: in the book crowley is described as an optimist because he has the "utter surety... that the universe would look after him". not god, but the universe. and of course he does: he helped create it and he's looking after it, too.
think about it: aziraphale had a sword, but crowley is about to face satan who wants to destroy the world, and crowley's only weapon is a tool of creation