Hebrews 12:25-29

25 See to it that you do not refuse him who speaks. If they did not escape when they refused him who warned them on earth, how much less will we, if we turn away from him who warns us from heaven? 26 At that time his voice shook the earth, but now he has promised, “Once more I will shake not only the earth but also the heavens.” 27 The words “once more” indicate the removing of what can be shaken—that is, created things—so that what cannot be shaken may remain.

28 Therefore, since we are receiving a kingdom that cannot be shaken, let us be thankful, and so worship God acceptably with reverence and awe, 29 for our “God is a consuming fire.”

God is Talking!
Everything visible and physical is preceded by something invisible and spiritual.
Hebrews 12:25-29
But mark this: There will be terrible times in the last days.
2 Timothy 3:1
People will be lovers of themselves, lovers of money, boastful, proud, abusive, disobedient to their parents, ungrateful, unholy, 3 without love, unforgiving, slanderous, without self-control, brutal, not lovers of the good, 4 treacherous, rash, conceited, lovers of pleasure rather than lovers of God— 5 having a form of godliness but denying its power. Have nothing to do with such people.
2 Timothy 3:2-5
5 Then the word of the Lord came to me. 6 He said, “Can I not do with you, Israel, as this potter does?” declares the Lord. “Like clay in the hand of the potter, so are you in my hand, Israel.
Jeremiah 18:5-6
1) He shakes the world because He has to get our attention.
Hebrews 12:25
2) God shakes the world because He wants to restore the truth.
Haggai 2:6-9
3) God shook the world because He has a gift.
Hebrews 12:28
His love is unconditional — it’s unshakeable.
Heaven and earth will pass away, but my words will never pass away.
Matthew 24:35
Unshakeable Kingdom.
1) give thanks
2) serve other people