Gary Hampton Commentaries
Hebrews 12:2629
An Invitation to Come to the Unshakable Kingdom
The earth shook when God spoke to his people at Sinai. The reference to a second shaking comes from Haggai 2:6-9. This shaking would be directly related with the coming of the Messiah, who is represented as the desire of all nations. It is to continue until all the things that can be shaken, or are perishable, have been removed and only the unshakable, or eternal things, remain. Christ's kingdomis the main unshakable thing that will be left. This is in contrast with the kingdom of fleshly Israel constituted at Sinai, which was removed with the destruction of Jerusalem in A. D. 70 (Hebrews 12:26-27).
Since Christians abide in a kingdom that is unshakable, we should strive to obey God in love so that we might continue to receive His grace and remain in the kingdom. Note: The kingdom is spoken of as already present, which is contrary to premillennialism. The writer quoted Deuteronomy 4:24 to give a further incentive for remaining in the kingdom that is immovable. Those who become disobedient and are found outside that kingdom will be punished by God as the apostates they are (Hebrews 12:28-29)!