What impression do we get from the description of Nadab and Abihu's actions?
Leviticus 10:1 (ESV)
1Now Nadab and Abihu, the sons of Aaron, each took his censer and put fire in itand laid incense on it and offered unauthorized fire before the LORD, which he had not commanded them.
The way their actions are listed gives an impression of rashness.
1 Now Nadab and Abihu, the sons of Aaron, each took his censer and put fire in it and laid incense on it and offered unauthorized fire before the LORD, which he had not commanded them.