Unit 1 (v. 6a): The message is identified and targeted
Zechariah’s interpreter responds and makes clear that what follows is not merely commentary but “the word of Yahweh” specifically directed “to Zerubbabel” (Zechariah 4:6). The vision is being translated into a concrete word for a named leader in a real task.
Unit 2 (v. 6b): The central contrast—human capability versus Yahweh’s Spirit
The core slogan is framed as a double negation and then a positive: “Not by might, nor by power, but by my Spirit.” The point is that success will not be credited to human force or human capacity, but to Yahweh’s own Spirit acting as the decisive means. The line is sealed with the authority formula, “says Yahweh of Hosts,” grounding the claim in Yahweh’s command and resources.
Unit 3 (v. 7a): The obstacle is confronted as a “great mountain”
A rhetorical challenge is thrown at the obstacle: “Who are you, great mountain?” The mountain is treated like an opponent that looks unmovable. The promise follows immediately: “before Zerubbabel you shall become a plain,” picturing the obstacle being flattened so the path forward is cleared.
Unit 4 (v. 7b): The completion is pictured and publicly celebrated
The result is described as Zerubbabel bringing out “the top stone,” implying a culminating step in the building process. This action is accompanied by shouting: “Grace, grace, to it,” using repeated acclaim to mark the moment as a gift-enabled outcome rather than a self-made achievement (grace).
