From Bible Encyclopedia
nā´dab (דנדב, nādhābh, “noble,” "liberal," or "generous"; Ναδάβ, Nadab):
(1) Aaron's first-born son (Exodus 6:23; Numbers 3:2; Numbers 26:60; 1 Chronicles 6:3 (5:29 in Hebrew); 1 Chronicles 24:1). He was permitted with Moses, Aaron, the 70 elders, and his brother Abihu to ascend Mount Sinai and behold the God of Israel Exodus 24:1, Exodus 24:9. He was associated with his father and brothers in the priestly office Exodus 28:1. Along with Abihu he was guilty of offering “strange fire,” and both “died before Yahweh” Leviticus 10:1-2; Numbers 3:4; Numbers 26:61. The nature of their offence is far from clear. The word rendered “strange” seems in this connection to mean no more than “unauthorized by the Law” (see זוּר, zūr, in Brown, Driver, and Briggs, Hebrew and English Lexicon of the Old Testament, and compare Exodus 30:9). The proximity of the prohibition of wine to officiating priests Leviticus 10:8-9 has given rise to the erroneous suggestion of the Midrash that the offence of the brothers was drunkenness. Nadab was the eldest of Aaron's four sons (Exodus 6:23; Numbers 3:2). He with his brothers and their father were consecrated as priests of YHWH (Exodus 28:1). He afterwards perished with Abihu for the sin of offering strange fire on the altar of burnt-offering (Leviticus 10:1, Leviticus 10:2; Numbers 3:4; Numbers 26:60).
(4) Son and successor of Jeroboam I and after him for two years king of Israel 1 Kings 14:20; 1 Kings 15:25. While Nadab was investing Gibbethon, a Philistine stronghold, Baasha, who probably was an officer in the army, as throne-robbers usually were, conspired against him, slew him and seized the throne 1 Kings 15:27-31. While engaged with all Israel in laying siege to Gibbethon, a town of southern Dan (Joshua 19:44), a conspiracy broke out in his army, and he was slain by Baasha (1 Kings 15:25-28), after a reign of two years (955-953 BC). The assassination of Nadab was followed by that of his whole house, and thus this great Ephraimite family became extinct (1 Kings 15:29). With the assassination of Nadab the dynasty of Jeroboam was extirpated, as foretold by the prophet Ahijah (1 Kings 14). This event is typical of the entire history of the Northern Kingdom, characterized by revolutions and counter-revolutions.