Nadab And Abihu
In the Book of Exodus, the Book of Leviticus and the Book of Numbers, Nadab (Hebrew: נדב, Nadabh ; "generous, giving") and Abihu (Hebrew: אביהוא, Abhihu ; "He (Yahweh) is my father") were respectively the eldest and second-eldest of the sons of Aaron. They offered a sacrifice with unauthorized fire before the LORD, disobeying his instructions. Nadab and Abihu were consumed immediately by God’s fire. They trespassed upon a task that belonged only between God and the high priest. The priests were commanded not to mourn, but the people at large were permitted.
Read more about Nadab And Abihu: Background, Violation of God’s Law and Punishment, Catholic View, Reformation and Post Reformation View, View in Judaism