26 whose voice then shook the earth, but now he has promised, saying, Once again, once for all, I make not only earth, but heaven also to tremble.
Hebrews 12:26 Cross References - MNT
Hebrews 12:27
27 That phrase, "Once again," signifies the removal of the things which can be shaken, created things, in order that the things which cannot be shaken may remain.