Passage
Speake to Zerubbabel the prince of Iudah, and say, I wil shake the heauens and the earth,
Speake to Zerubbabel the prince of Iudah, and say, I wil shake the heauens and the earth,
Haggai 2:20 Is the seede yet in the barne? as yet the vine, and the figtree, and the pomegranate, and the oliue tree hath not brought forth: from this day will I blesse you.
Haggai 2:21 And againe the worde of the Lord came vnto Haggai in the foure and twentieth day of the moneth, saying,
Haggai 2:22 Speake to Zerubbabel the prince of Iudah, and say, I wil shake the heauens and the earth,
Haggai 2:23 And I will ouerthrowe the throne of kingdomes, and I wil destroy the strength of the kingdomes of the heathen, and I wil ouerthrowe the charets, and those that ride in them, and the horse and the riders shall come downe, euery one by the sword of his brother. In that day, saith the Lord of hostes, will I take thee, O Zerubbabel my seruant, the sonne of Shealtiel, sayth the Lord, and wil make thee as a signet: for I haue chosen thee, sayth the Lord of hostes.
The verse centers on "speake", "zerubbabel", "prince", "iudah", "shake", "heauens", and "earth". It is saying that the verse draws attention to "speake" and "zerubbabel", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 21's "And againe the worde of the Lord..." into verse 23's "And I will ouerthrowe the throne of...", so "speake" and "zerubbabel" belong inside that flow. In Haggai context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "speake" and "zerubbabel" with trust shaped by these words, not by a vague optimism outside the passage.