Hebrews 12:25-29
New King James Version (NKJV)

25 See that you do not refuse Him who speaks. For if they did not escape who refused Him who
spoke on earth, much more shall we not escape if we turn away from Him
who speaks from heaven, 26 whose voice then shook the earth; but now He
has promised, saying, “Yet once more I shake not only the earth, but also
heaven.” 27 Now this, “Yet once more,” indicates the removal of those things
that are being shaken, as of things that are made, that the things which cannot be shaken may
remain.

28 Therefore, since we are receiving a kingdom which cannot be shaken, let us have grace, by
which we may serve God acceptably with reverence and godly fear. 29 For our
God is a consuming fire.