Passage

Fire that had not been commanded

Source and translation

World English Bible, Protestant Edition · Public domain · en

¹Nadab and Abihu, the sons of Aaron, each took his censer, and put fire in it, and laid incense on it, and offered strange fire before the LORD, which he had not commanded them.

Leviticus 10:1World English Bible, Protestant Edition

The scene

Nadab and Abihu put fire and incense in their censers and offer fire before the LORD that he had not commanded.

To understand

The next line describes fire coming from before the LORD, consuming them and causing their deaths.

A question

What does the narrator specify about the command when describing the fire they offer?