"God had appointed Nadab and Abihu to a most sacred work, therefore He honored them in a most wonderful manner. He gave them a view of His excellent glory, that the scenes they should witness in the mount would abide with them and the better qualify them to minister in His service and render to Him that exalted honor and reverence before the people which would give them clearer conceptions of His character and awaken in them due obedience and reverence for all His requirements. 3T 297.2"
"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."
The EGW passage refers to Nadab and Abihu seeing God's glory, which is described in Exodus 24:10.
"Before Moses left his people for the mount, he read to them the words of the covenant that God had made with them, and they with one voice answered: “All that the Lord hath said will we do, and be obedient.” How great must have been the sin of Aaron, how aggravated in the sight of God! 3T 297.3"
"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."
The EGW passage directly quotes the people's response from Exodus 24:3.
"While Moses was receiving the law of God in the mount, the Lord informed him of the sin of rebellious Israel and requested him to let them go, that He might destroy them. But Moses pleaded before God for the people. Although Moses was the meekest man that lived, yet when the interests of the people over whom God had appointed him as leader were at stake, he lost his natural timidity and with singular persistency and wonderful boldness pleaded with God for Israel. He would not consent that God should destroy His people, although God promised that in their destruction He would exalt Moses and raise up a better people than Israel. 3T 297.4"
"Now therefore let me alone, that my wrath may wax hot against them, and that I may consume them: and I will make of thee a great nation."
The EGW passage directly refers to God's offer to destroy Israel and make a great nation of Moses, as described in Exodus 32:10.