Nadab and Abihu accompanied Moses, Aaron, and Israel's elders partway up Sinai and participated in a remarkable covenant encounter with God. They were later consecrated as priests with Aaron and their brothers. Leviticus 10 recounts that Nadab and Abihu offered unauthorized or strange fire before the Lord, contrary to His command, and fire came from the Lord and consumed them. They died without sons, leaving Eleazar and Ithamar to continue the priestly line.