Exodus 26-30, Deuteronomy 5, Patriarchs and Prophets 303-305
"Moses was called up into the mountain to meet with God. Alone he climbed the steep and rugged path, and drew near to the cloud that marked the place of Jehovah's presence. Israel was now to be taken into a close and peculiar relation to the Most High—to be incorporated as a church and a nation under the government of God" (PP 303.1). "Moses returned to the camp, and having summoned the elders of Israel, he repeated to them the divine message. Their answer was, “All that the Lord hath spoken we will do.” Thus they entered into a solemn covenant with God, pledging themselves to accept Him as their ruler, by which they became, in a special sense, the subjects of His authority. " (PP 303.3). " When they met with difficulties in the way, they were disposed to murmur against Moses and Aaron, and accuse them of leading the hosts of Israel from Egypt to destroy them. The Lord would honor Moses before them, that they might be led to confide in his instructions." (PP 303.4). "The people were to be impressed that everything connected with the service of God must be regarded with the greatest reverence. The Lord said to Moses, “Go unto the people, and sanctify them today and tomorrow, and let them wash their clothes, and be ready against the third day: for the third day the Lord will come down in the sight of all the people upon Mount Sinai.” During these intervening days all were to occupy the time in solemn preparation to appear before God. Their person and their clothing must be freed from impurity. And as Moses should point out their sins, they were to devote themselves to humiliation, fasting, and prayer, that their hearts might be cleansed from iniquity." (PP 303.5).
" its summit was covered with a thick cloud, which grew more black and dense, sweeping downward until the entire mountain was wrapped in darkness and awful mystery. Then a sound as of a trumpet was heard, summoning the people to meet with God; and Moses led them forth to the base of the mountain. From the thick darkness flashed vivid lightnings, while peals of thunder echoed and re-echoed among the surrounding heights. “And Mount Sinai was altogether on a smoke, because the Lord descended upon it in fire...“The glory of the Lord was like devouring fire on the top of the mount” in the sight of the assembled multitude. And “the voice of the trumpet sounded long, and waxed louder and louder.” So terrible were the tokens of Jehovah's presence that the hosts of Israel shook with fear, and fell upon their faces before the Lord. Even Moses exclaimed, “I exceedingly fear and quake.” Hebrews 12:21." (PP 304.2).
Jehovah revealed Himself, not alone in the awful majesty of the judge and lawgiver, but as the compassionate guardian of His people: “I am the Lord thy God, which have brought thee out of the land of Egypt, out of the house of bondage.”...who had thus shown Himself to be above all the gods of Egypt—He it was who now spoke His law." (PP 305.1). "God honored them by making them the guardians and keepers of His law, but it was to be held as a sacred trust for the whole world. The precepts of the Decalogue are adapted to all mankind, and they were given for the instruction and government of all. Ten precepts, brief, comprehensive, and authoritative, cover the duty of man to God and to his fellow man; and all based upon the great fundamental principle of love." (PP 305.2). "Jehovah, the eternal, self-existent, uncreated One, Himself the Source and Sustainer of all, is alone entitled to supreme reverence and worship." (PP 305.4). “Thou shalt not make unto thee any graven image, or any likeness of anything that is in heaven above, or that is in the earth beneath, or that is in the water under the earth: thou shalt not bow down thyself to them, nor serve them.” (PP 305.5).