Leviticus 10:1 Holman Christian Standard Bible (HCSB)
Nadab and Abihu
10 Aaron’s sons Nadab and Abihu each took his own firepan, put fire in it, placed incense on it, and presented unauthorized fire before the Lord, which He had not commanded them to do.
Leviticus 10:1 New International Version (NIV)
The Death of Nadab and Abihu
10 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.