American Tract Society Bible Dictionary
The second son of Aaron, consecrated to the priesthood with his three brethren, Exodus 28:21; but consumed shortly after by fire from the Lord, with Nadab his brother, for burning incense with common fire instead of that kept perpetually on the altar of burnt-offering, Leviticus 10:1-2 16:12 Numbers 16:46 . As this is immediately followed by the prohibition of wine to the priests when ministering in the tabernacle, it is not improbable that Nadab and Abihu were intoxicated when thus transgressing. Their death is a solemn warning not to presume to worship God except with incense kindled at the one altar which Christ hath sanctified, Hebrews 10:10-14 . It is a dangerous thing, in the service of God, to decline from his own institutions. We have to do with a God who is wise to prescribe his own worship, his to require what he has prescribed, and powerful to avenge what he has not prescribed.
These files are public domain and are a derivative of the topics are from American Tract Society Bible Dictionary published in 1859.
Rand, W. W. Entry for 'Abihu'. American Tract Society Bible Dictionary. https://www.studylight.org/dictionaries/eng/ats/a/abihu.html. 1859.