WPNT(i)
25 See to it that you not refuse Him who speaks. Because if they did not escape who refused Him who gave divine warning on earth, how much less will we, if we turn away from Him who warns from Heaven!
26 Then His voice shook the earth, but now He has promised, saying, “Yet once more I shake not only the earth but also the heaven.”
27 Now the ‘yet once more’ clearly indicates the removal of the things being shaken (created things), so that the unshakables may remain.
28 Therefore, since we are receiving an unshakable kingdom, let us hold on to the grace by which we serve God acceptably, with reverence and godly fear;