The "shaking of the nations" is Haggai’s great post-exilic prophecy: "Yet once, it is a little while, and I will shake the heavens, and the earth, and the sea, and the dry land; And I will shake all nations, and the desire of all nations shall come: and I will fill this house with glory, saith the LORD of hosts" (Haggai 2:6-7). The prophecy promised that the latter temple’s glory would exceed the former — fulfilled in the coming of Christ to the second temple. The author of Hebrews picks it up and points it forward to the final, cosmic shaking: "this word, Yet once more, signifieth the removing of those things that are shaken... that those things which cannot be shaken may remain" (Hebrews 12:26-29). The kingdom of Christ alone is unshakable.
Haggai's prophecy of YHWH's eschatological shaking; only the unshakable remains.
Haggai 2:6-9's prophecy: "Yet once, it is a little while, and I will shake the heavens, and the earth, and the sea, and the dry land; And I will shake all nations, and the desire of all nations shall come: and I will fill this house with glory." Quoted in Hebrews 12:26-29 as referring to the final eschatological shaking that will remove all created things subject to shaking, leaving only "a kingdom which cannot be moved." The shaking is therefore both immediate (Haggai's day) and final (the consummation).
Haggai 2:6-7 — "For thus saith the LORD of hosts; Yet once, it is a little while, and I will shake the heavens, and the earth, and the sea, and the dry land; And I will shake all nations, and the desire of all nations shall come."
Hebrews 12:26-27 — "Whose voice then shook the earth: but now he hath promised, saying, Yet once more I shake not the earth only, but also heaven. And this word, Yet once more, signifieth the removing of those things that are shaken... that those things which cannot be shaken may remain."
Isaiah 13:13 — "Therefore I will shake the heavens, and the earth shall remove out of her place, in the wrath of the LORD of hosts, and in the day of his fierce anger."
End-times shaking gets read as random apocalyptic; the purpose — that only the unshakable kingdom may remain — is the central point.
Hebrews 12 reveals the purpose of God's shaking: to remove what can be shaken so that what cannot be shaken may remain. The shaking is sifting, not destruction-for-its-own-sake. The unshakable kingdom is the goal; the shaking is the means.
Recover the purpose: every shaking, immediate or final, separates what must go from what stays. The saint's anchor is in the unshakable kingdom.
Hebrew raash.
['Hebrew', 'H7493', 'raash', 'to shake, quake']
['Greek', 'G4531', 'saleuō', 'to shake']
"Yet once more I shake."
"The shaking sifts; the unshakable remains."
"Anchor in the unshakable kingdom."