10:1 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.
10:4 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.
Strange fire. Fire "from before the Lord" had kindled upon the altar of burnt-offering the fire which the care of the priests was to keep burning Leviticus 6:12 . No commandment had yet been given Leviticus 16:12 how the incense should be kindled. The sin of Nadab and Abihu was in acting in the things of God without seeking the mind of God. It was "will worship" Colossians 2:23 which often has a "show of wisdom and humility." It typifies any use of carnal means to kindle the fire of devotion and praise.
10:6 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.
Mish-a-el, 'one with God.' El-za-phan, 'God protects.' Uz-zi-el, 'power of God.'
10:17 Wherefore have ye not eaten the sin offering in the holy place, seeing it is most holy, and God hath given it you to bear the iniquity of the congregation, to make atonement for them before the LORD?
El-e-a-zar, 'God has helped.' Ith-a-mar, 'isle of palms.'
(See Scofield "Exodus 29:33") .