obduracy

noun

Etymology: Etymology tree English obdurate English -cy English obduracy From obdurate + -cy.

1. The state of being obdurate, intractable, or stubbornly inflexible.

   “By this hand thou, thinkeſt me as farre in the diuels booke, as thou and Falſtaffe, for obduracie and perſiſtancie, let the end trie the man, [...]”

   “It might also serve to condemn the obduracy and hard-heartedness of the Jews, who relented not, when even the earth trembled and the rocks rent.”