“And this word, Yet once more, signifieth the removing of those things that are shaken, as of things that are made, that those things which cannot be shaken may remain.”
King James Version (KJV)
12:27 The things which are shaken - Namely, heaven and earth. As being made - And consequently liable to change. That the things which are not shaken may remain - Even the new heavens and the new earth, #Rev 21:1|.
Heb 12:27 And [this word], Yet once more signifieth, etc. This means, says the apostle, that there is only one more shaking after the time of Hag 2:6. It is not a material, but moral and spiritual event. It began when Christ came and will continue until all that is temporal or erroneous be removed and only the eternal remains. Among the things removed is the covenant of Sinai.