"Then followed the ratification of the covenant. An altar was built at the foot of the mountain, and beside it twelve pillars were set up, “according to the twelve tribes of Israel,” as a testimony to their acceptance of the covenant. Sacrifices were then presented by young men chosen for the service. PP 312.1"
"And Moses wrote all the words of the Lord, and rose up early in the morning, and builded an altar under the hill, and twelve pillars, according to the twelve tribes of Israel."
The EGW passage directly references and describes the events in Exodus 24:4.
"liberty to choose whether or not they would comply with them. They had at the first promised to obey the voice of God; but they had since heard His law proclaimed; and its principles had been particularized, that they might know how much this covenant involved. Again the people answered with one accord, “All that the Lord hath said will we do, and be obedient.” “When Moses had spoken every precept to all the people according to the law, he took the blood, ... and sprinkled both the book and all the people, saying, This is the blood of the testament which God hath enjoined unto you.” Hebrews 9:19, 20 . PP 312.2"
"And Moses came and told the people all the words of the Lord, and all the judgments: and all the people answered with one voice, and said, All the words which the Lord hath said will we do."
EGW quotes Exodus 24:3 and references Hebrews 9:19,20 in relation to the events described in Exodus 24.
"And he took the book of the covenant, and read in the audience of the people: and they said, All that the Lord hath said will we do, and be obedient."
The EGW passage directly quotes Exodus 24:7.
Arrangements were now to be made for the full establishment of the chosen nation under Jehovah as their king. Moses had received the command, “Come up unto the Lord, thou, and Aaron, Nadab, and Abihu, and seventy of the elders of Israel; and worship ye afar off. And Moses alone shall come near the Lord.” While the people worshiped at its foot, these chosen men were called up into the mount. The seventy elders were to assist Moses in the government of Israel, and God put upon them His Spirit, and honored them with a view of His power and greatness. “And they saw the God of Israel: and there was under His feet as it were a paved work of a sapphire stone, and as it were the body of heaven in his clearness.” They did not behold the Deity, but they saw the glory of His presence. Before this they could not have endured such a scene; but the exhibition of God's power had awed them to repentance; they had been contemplating His glory, purity, and mercy, until they could approach nearer to Him …
"And he said unto Moses, Come up unto the Lord, thou, and Aaron, Nadab, and Abihu, and seventy of the elders of Israel; and worship ye afar off."
The EGW passage directly quotes Exodus 24:1.