Leviticus 10:1-3

Nadab and Abihu

10:1 Then Aaron’s sons, Nadab and Abihu, each took his fire pan and put fire in it, set incense on it, and presented strange fire before the Lord, which he had not commanded them to do. 10:2 So fire went out from the presence of the Lord and consumed them so that they died before the Lord. 10:3 Moses then said to Aaron, “This is what the Lord spoke: ‘Among the ones close to me I will show myself holy, and in the presence of all the people I will be honored.’” So Aaron kept silent.

Leviticus 10:10

10:10 as well as to distinguish between the holy and the common, and between the unclean and the clean,