Leviticus 10:1-3

CLV(i) 1 The sons of Aaron, Nadab and Abihu, each took his fire-pan, put fire in them, placed incense on it and came near before Yahweh with alien fire such as He had not instructed them. 2 Hence fire came forth from before Yahweh and devoured them, and they died before Yahweh. 3 Then Moses said to Aaron:That is what Yahweh spoke of, saying:Among those near Me shall I be hallowed, and in the presence of all the people shall I be glorified. Aaron was still;"