Leviticus 10-12…The death of Nadab and Abihu, and outlining things unclean.
Many biblical texts clearly teach that our holy Creator takes His worship very seriously. In these chapters, for example, we read of the occasion in which God struck Nadab and Abihu dead for worshiping Him in a way that was strange (Leviticus 10:1–3). Commentators are not sure about the exact nature of their error, but they do agree that the seriousness of the offense is related to their worshiping God in a manner that He had not commanded. They sought to be innovators in worship, and they paid the price for it. The Lord does have some lines within which we’re to color, especially when we consider 1 Corinthians 11:27–30. Many of the Corinthian Christians were taking part in the sacrament of the Lord’s Supper inappropriately, and some of them died for their unworthy partaking. These passages, and many others, make it clear that it is a very serious matter to worship God according to his command.