"The Sacredness of the Work The minister stands as God's mouthpiece to the people, and in thought, in word, in act, he is to represent his Lord. When Moses was chosen as the messenger of the covenant, the word given him was, “Be thou for the people to Godward.” [ Exodus 18:19 .] Today God chooses men as He chose Moses, to be His messengers, and heavy is the woe resting on the one who dishonors his holy calling, or lowers the standard set for him in the life and labors of the Son of God. GW 20"
"Hearken now unto my voice, I will give thee counsel, and God shall be with thee: Be thou for the people to God-ward, that thou mayest bring the causes unto God:"
Ellen White directly references Exodus 18:19 in this passage.
"The punishment that fell upon Nadab and Abihu, the sons of Aaron, shows how God regards those ministers who do that which dishonors their sacred office. These men were consecrated to the priesthood, but they had not learned to control themselves. Habits of self-indulgence, long cherished, had obtained a hold upon them which even the responsibility of their office had not power to break. GW 20.2"
"And Nadab and Abihu, the sons of Aaron, took either of them his censer, and put fire therein, and put incense thereon, and offered strange fire before the Lord, which he commanded them not. And there went out fire from the Lord, and devoured them, and they died before the Lord."
EGW directly references the story of Nadab and Abihu and their punishment, drawing a lesson from it.
"At the hour of worship, as the prayers and praise of the people were ascending to God, Nadab and Abihu, partially intoxicated, took each his censer, and burned fragrant incense thereon. But they transgressed God's command by using “strange fire,” instead of the sacred fire which God himself had kindled, and which He had commanded should be used for this purpose. For this sin, a fire went out from the Lord, and devoured them in the sight of the people. “Then Moses said unto Aaron, This is it that the Lord spake, saying, I will be sanctified in them that come nigh Me, and before all the people I will be glorified.” [See Leviticus 10:1-7 .] GW 20.3"
"And Nadab and Abihu, the sons of Aaron, took either of them his censer, and put fire therein, and put incense thereon, and offered strange fire before the Lord, which he commanded them not. And there went out fire from the Lord, and devoured them, and they died before the Lord. Then Moses said unto Aaron, This is it that the Lord spake, saying, I will be sanctified in them that come nigh me, and before all the people I will be glorified. And Aaron held his peace. And Moses called Mishael and Elzaphan, the sons of Uzziel the uncle of Aaron, and said unto them, Come near, carry your brethren from before the sanctuary out of the camp. So they went near, and carried them in their coats out of the camp; as Moses had said. And Moses said unto Aaron, and unto Eleazar and unto Ithamar, his sons, Uncover not your heads, neither rend your clothes; lest ye die, and lest wrath come upon all the people: but let your brethren, the whole house of Israel, bewail the burning which the Lord hath kindled. And ye shall not go out from the door of the tabernacle of the congregation, lest ye die: for the anointing oil of the Lord is upon you. And they did according to the word of Moses."
Ellen White directly references Leviticus 10:1-7 in this passage.