ZEC 7:12

12 Yea, they made their hearts as shamir [(diamond)], and would not yield in mishma'at [(obedience)] to the Torah and the devarim which Hashem Tzva'os hath sent by His Ruach through the hand of the nevi'im harishonim; therefore came a ketzef gadol [(great wrath)] from Hashem Tzva'os.