Abihu in the Bible Encyclopedia - ISBE
a-bi'-hu ('abhihu', "father he is," or "my father he is"):
Second son of Aaron, the high priest (Ex 6:23). With his older
brother Nadab he "died before Yahweh," when the two "offered
strange fire" (Lev 10:1,2). It may be inferred from the
emphatic prohibition of wine or strong drink, laid upon the
priests immediately after this tragedy, that the two brothers
were going to their priestly functions in an intoxicated
condition (Lev 10:8-11). Their death is mentioned three times
in subsequent records (Nu 3:4; 26:61; 1 Ch 24:2).
Read More about Abihu in the Bible Encyclopedia - ISBE