English Standard Version
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.New International Version
Aaron's sons Nadab and Abihu took their censers, put fire in them and added incense; and they offered unauthorized fire before the LORD, contrary to his command.Catholic Public Domain Version
And the sons of Aaron, Nadab and Abihu, picking up their censers, placed fire in them and incense upon them, offering in the sight of the Lord a strange fire, such as was not instructed of them