God distinguished Aaron by choosing him and his male posterity for the priesthood. His sons ministered in the sacred office. Nadab and Abihu failed to reverence the command of God to offer sacred fire upon their censers with the incense before Him. God had forbidden them, upon pain of death, to present the common fire before Him with the incense. (3T 295.1) MC VC

But here is seen the result of loose discipline. As these sons of Aaron had not been educated to respect and reverence the commands of their father, as they disregarded parental authority, they did not realize the necessity of explicitly following the requirements of God. When indulging their appetite for wine and while under its exciting stimulus, their reason was clouded, and they could not discern the difference between the sacred and the common. Contrary to God’s express direction, they dishonored Him by offering common instead of sacred fire. God visited them with His wrath; fire went forth from His presence and destroyed them. (3T 295.2) MC VC

Aaron bore his severe affliction with patience and humble submission. Sorrow and keen agony wrung his soul. He was convicted of his neglect of duty. He was priest of the most high God, to make atonement for the sins of the people. He was priest of his household, yet he had been inclined to pass over the folly of his children. He had neglected his duty to train and educate them to obedience, self-denial, and reverence for parental authority. Through feelings of misplaced indulgence, he failed to mold their characters with high reverence for eternal things. Aaron did not see, any more than many Christian parents now see, that his misplaced love and the indulgence of his children in wrong was preparing them for the certain displeasure of God and for His wrath to break forth upon them to their destruction. While Aaron neglected to exercise his authority, the justice of God awakened against them. Aaron had to learn that his gentle remonstrance, without a firm exercise of parental restraint, and his imprudent tenderness toward his sons were cruelty in the extreme. God took the work of justice into His own hands and destroyed the sons of Aaron. (3T 295.3) MC VC

Aaron and also his sons had been exalted by being called into the mount to there witness the glory of God. “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.” Exodus 24:10. (3T 297.1) MC VC

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) MC VC

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.” Exodus 24:7. How great must have been the sin of Aaron, how aggravated in the sight of God! (3T 297.3) MC VC

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) MC VC