Climbing the Highest Mountain to the Unshakable Kingdom 

Hebrews 12:18-29 (NASB)
¹⁸  For you have not come to a mountain that can be touched and to a blazing fire, and to darkness and gloom and whirlwind,
¹⁹  and to the blast of a trumpet and the sound of words which sound was such that those who heard begged that no further word be spoken to them.
²⁰  For they could not bear the command, "IF EVEN A BEAST TOUCHES THE MOUNTAIN, IT WILL BE STONED."
²¹  And so terrible was the sight, that Moses said, "I AM FULL OF FEAR and trembling."
²²  But you have come to Mount Zion and to the city of the living God, the heavenly Jerusalem, and to myriads of angels,
²³  to the general assembly and church of the firstborn who are enrolled in heaven, and to God, the Judge of all, and to the spirits of the righteous made perfect,
²⁴  and to Jesus, the mediator of a new covenant, and to the sprinkled blood, which speaks better than the blood of Abel.
²⁵  See to it that you do not refuse Him who is speaking. For if those did not escape when they refused him who warned themon earth, much less will we escape who turn away from Him who warns from heaven.
²⁶  And His voice shook the earth then, but now He has promised, saying, "YET ONCE MORE I WILL SHAKE NOT ONLY THE EARTH, BUT ALSO THE HEAVEN."
²⁷  This expression, "Yet once more," denotes the removing of those things which can be shaken, as of created things, so that those things which cannot be shaken may remain.
²⁸  Therefore, since we receive a kingdom which cannot be shaken, let us show gratitude, by which we may offer to God an acceptable service with reverence and awe;
²⁹  for our God is a consuming fire.

1.     Mountain Of Law In The Shadow Of The Mountain Of Grace

Hebrews 12:18-24 (NASB)
¹⁸  For you have not come to a mountain that can be touched and to a blazing fire, and to darkness and gloom and whirlwind,
¹⁹  and to the blast of a trumpet and the sound of words which sound was such that those who heard begged that no further word be spoken to them.
²⁰  For they could not bear the command, "IF EVEN A BEAST TOUCHES THE MOUNTAIN, IT WILL BE STONED."
²¹  And so terrible was the sight, that Moses said, "I AM FULL OF FEAR and trembling."
²²  But you have come to Mount Zion and to the city of the living God, the heavenly Jerusalem, and to myriads of angels,
²³  to the general assembly and church of the firstborn who are enrolled in heaven, and to God, the Judge of all, and to the spirits of the righteous made perfect,
²⁴  and to Jesus, the mediator of a new covenant, and to the sprinkled blood, which speaks better than the blood of Abel.

Psalm 50:2 (NASB)
²  Out of Zion, the perfection of beauty, God has shone forth.

2.     Gift Of An Unshakable Kingdom & Gospel  

Hebrews 12:25-29 (NASB)
²⁵  See to it that you do not refuse Him who is speaking. For if those did not escape when they refused him who warned themon earth, much less will we escape who turn away from Him who warns from heaven.
²⁶  And His voice shook the earth then, but now He has promised, saying, "YET ONCE MORE I WILL SHAKE NOT ONLY THE EARTH, BUT ALSO THE HEAVEN."
²⁷  This expression, "Yet once more," denotes the removing of those things which can be shaken, as of created things, so that those things which cannot be shaken may remain.
²⁸  Therefore, since we receive a kingdom which cannot be shaken, let us show gratitude, by which we may offer to God an acceptable service with reverence and awe;
²⁹  for our God is a consuming fire.

Haggai 2:6 (NASB)
⁶  "For thus says the LORD of hosts, 'Once more in a little while, I am going to shake the heavens and the earth, the sea also and the dry land.

Remembering With Reverence

1 Corinthians 11:23-28 (NASB)
²³  For I received from the Lord that which I also delivered to you, that the Lord Jesus in the night in which He was betrayed took bread;
²⁴  and when He had given thanks, He broke it and said, "This is My body, which is for you; do this in remembrance of Me."
²⁵  In the same way He took the cup also after supper, saying, "This cup is the new covenant in My blood; do this, as often as you drink it, in remembrance of Me."
²⁶  For as often as you eat this bread and drink the cup, you proclaim the Lord's death until He comes.
²⁷  Therefore whoever eats the bread or drinks the cup of the Lord in an unworthy manner, shall be guilty of the body and the blood of the Lord.
²⁸  But a man must examine himself, and in so doing he is to eat of the bread and drink of the cup.