Zechariah 7:12

an adamant perhaps diamond, "so called from its cutting and perforating (the original meaning of the word being a sharp point, or thorn), as the point of a styluswas made of diamonds, Jeremiah 17:1." Gesen. "The stone, whatever it be, was hard enough to cut ineffaceable characters (Jeremiah 17:1): it was harder than flint (Ezekiel 3:9). It would cut rocks; it could not be graven itself, or receive the characters of God." Pusey.

in his spirit Rather, by His Spirit, as R. V. The preposition is the same as in the next clause, by the hand of His prophets. The Holy Ghost was the Divine Agent, the prophets were the human instruments. Comp. Nehemiah 9:30.