SEV Biblia, Chapter 7:12
y pusieron su corazón como diamante, para no oír la ley ni las palabras que el SEÑOR de los ejércitos enviaba por su Espíritu, por mano de los profetas primeros; fue, por tanto , hecho gran castigo por el SEÑOR de los ejércitos.
Clarke's Bible Commentary - Zechariah 7:12
Verse 12. Made their hearts as an adamant stone] rym shamir may mean the granite. This is the hardest stone with which the common people could be acquainted. Perhaps the corundum, of which emery is a species, may be intended. Bochart thinks it means a stone used in polishing others. The same name, in Hebrew, applies to different stones.
John Gill's Bible Commentary
Ver. 12. Yea, they made their hearts [as] an adamant stone , etc.] The word here used is translated a “diamond” in ( Jeremiah 17:1) and it is said to be harder than a flint, ( Ezekiel 3:9). The Jewish writers say it is a worm like a barley corn, so strong as to cut the hardest stones in pieces; Moses (they say) used it in hewing the stones for the two tables of the law, and in fitting the precious stones in the ephod; and Solomon in cutting the stones for the building of the temple; and is so hard that it cannot be broken by iron: and as hard is naturally the heart of man, and which becomes more so by sinning, and obstinate persisting in it, that nothing can remove the hardness of it but the powerful and efficacious grace of God: as hard as the adamant is, it is to be softened by the blood of a goat, as naturalists says f153 ; so the blood of Christ sprinkled on the heart, and a sense of forgiveness of sin by it, will soften the hardest heart: lest they should hear the law, and the words which the Lord of hosts hath seat in his Spirit by the former prophets ; the words of reproof, admonition, caution, and exhortation, which Jeremiah and others were sent to deliver to them, under the influence of the Spirit of God: therefore came a great wrath from the Lord of hosts ; which brought the Chaldeans upon them, who carried them captive into Babylon.
Matthew Henry Commentary
Verses 8-14 - God's judgements upon Israel of old for their sins, were written to warn Christians. The duties required are, not keeping fasts an offering sacrifices, but doing justly and loving mercy, which tend to the public welfare and peace. The law of God lays restraint upon the heart. But they filled their minds with prejudices against the word of God. Nothing is harder than the heart of a presumptuous sinner. See the fatal consequences of this to their fathers. Great sins against the Lord of hosts, bring great wrath from his power, which cannot be resisted. Sin, if regarded in the heart, will certainly spoil the success of prayer. The Lord always hears the cry of the broken-hearte penitent; yet all who die impenitent and unbelieving, will find n remedy or refuge from miseries which while here they despised an defied, but which they then will not be able to bear __________________________________________________________________
Original Hebrew
ולבם 3820 שׂמו 7760 שׁמיר 8068 משׁמוע 8085 את 853 התורה 8451 ואת 853 הדברים 1697 אשׁר 834 שׁלח 7971 יהוה 3068 צבאות 6635 ברוחו 7307 ביד 3027 הנביאים 5030 הראשׁנים 7223 ויהי 1961 קצף 7110 גדול 1419 מאת 853 יהוה 3068 צבאות׃ 6635