Leviticus 9:24--10:2

9:24 Then fire went out from the presence of the Lord and consumed the burnt offering and the fat parts on the altar, and all the people saw it, so they shouted loudly and fell down with their faces to the ground.

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.