1 On the third new moon after the people of Israel had gone out of the land of Egypt, on that day they came into the wilderness of Sinai. 2 They set out from Rephidim and came into the wilderness of Sinai, and they encamped in the wilderness. There Israel encamped before the mountain, 3 while Moses went up to God. The LORD called to him out of the mountain, saying, "Thus you shall say to the house of Jacob, and tell the people of Israel: 4 You yourselves have seen what I did to the Egyptians, and how I bore you on eagles' wings and brought you to myself. 5 Now therefore, if you will indeed obey my voice and keep my covenant, you shall be my treasured possession among all peoples, for all the earth is mine; 6 and you shall be to me a kingdom of priests and a holy nation. These are the words that you shall speak to the people of Israel."…

16 On the morning of the third day there were thunders and lightnings and a thick cloud on the mountain and a very loud trumpet blast, so that all the people in the camp trembled. 17 Then Moses brought the people out of the camp to meet God, and they took their stand at the foot of the mountain. 18 Now Mount Sinai was wrapped in smoke because the LORD had descended on it in fire. The smoke of it went up like the smoke of a kiln, and the whole mountain trembled greatly. 19 And as the sound of the trumpet grew louder and louder, Moses spoke, and God answered him in thunder. 20 The LORD came down on Mount Sinai, to the top of the mountain. And the LORD called Moses to the top of the mountain, and Moses went up… 23 And Moses said to the LORD, "The people cannot come up to Mount Sinai… 24 And the LORD said to him, "Go down…

18 Now when all the people saw the thunder and the flashes of lightning and the sound of the trumpet and the mountain smoking, the people were afraid and trembled, and they stood far off 19 and said to Moses, "You speak to us, and we will listen; but do not let God speak to us, lest we die." 20 Moses said to the people, "Do not fear, for God has come to test you, that the fear of him may be before you, that you may not sin." 21 The people stood far off, while Moses drew near to the thick darkness where God was.

(Exodus 19:1-6, 16-20, 23-24; 20:18-21 ESV)

18 For you have not come to what may be touched, a blazing fire and darkness and gloom and a tempest 19 and the sound of a trumpet and a voice whose words made the hearers beg that no further messages be spoken to them...

22 But you have come to Mount Zion and to the city of the living God, the heavenly Jerusalem, and to innumerable angels in festal gathering, 23 and to the assembly of the firstborn who are enrolled in heaven, and to God, the judge of all, and to the spirits of the righteous made perfect, and to 24 Jesus, the mediator of a new covenant, and to the sprinkled blood that speaks a better word than the blood of Abel...

28 Therefore, let us be grateful for receiving a kingdom that cannot be shaken, and thus let us offer to God acceptable worship, with reverence and awe, 29 for our God is a consuming fire.

(Hebrews 12:18-19, 22-24, 28-29)