Hebrews 12:26-27

The earth was rocked at the sound of his voice from the mountain, but now he has promised, “Once and for all I will not only shake the systems of the world, but also the unseen powers in the heavenly realm!” Now this phrase “once and for all” clearly indicates the final removal of things that are shaking, that is, the old order, so only what is unshakable will remain.