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