Discovery BoxZechariah 7:7 
Context7:7 Should you not have obeyed the words that the Lord cried out through the former prophets when Jerusalem 1 was peacefully inhabited and her surrounding cities, the Negev, and the Shephelah 2 were also populated?
Zechariah 7:12
Context7:12 Indeed, they made their heart as hard as diamond, 3 so that they could not obey the Torah and the other words the Lord who rules over all had sent by his Spirit through the former prophets. Therefore, the Lord who rules over all had poured out great wrath.
1 map For location see Map5 B1; Map6 F3; Map7 E2; Map8 F2; Map10 B3; JP1 F4; JP2 F4; JP3 F4; JP4 F4.
2 sn The Shephelah is the geographical region between the Mediterranean coastal plain and the Judean hill country. The Hebrew term can be translated “lowlands” (cf. ASV), “foothills” (NAB, NASB, NLT), or “steppes.”
3 tn The Hebrew term שָׁמִיר (shamir) means literally “hardness” and since it is said in Ezek 3:9 to be harder than flint, many scholars suggest that it refers to diamond. It is unlikely that diamond was known to ancient Israel, however, so probably a hard stone like emery or corundum is in view. The translation nevertheless uses “diamond” because in modern times it has become proverbial for its hardness. A number of English versions use “flint” here (e.g., NASB, NIV).
