Nadab in the Bible Encyclopedia - ISBE
            na'-dab (nadhabh, "noble"; Nadab):
(1) Aaron's first-born son (Ex 6:23; Nu 3:2; 26:60; 1 Ch 6:3 
(Hebrew 5:29); 24:1). He was permitted with Moses, Aaron, 
the 70 elders, and his brother Abihu to ascend Mt. Sinai and 
behold the God of Israel (Ex 24:1,9). He was associated with 
his father and brothers in the priestly office (Ex 28:1). 
Along with Abihu he was guilty of offering "strange fire," 
and both "died before Yahweh" (Lev 10:1,2; Nu 3:4; 26:61). 
The nature of their offense is far from clear. The word 
rendered "strange" seems in this connection to mean no more 
than "unauthorized by the Law" (see zur, in BDB, and compare 
Ex 30:9). The proximity of the prohibition of wine to 
officiating priests (Lev 10:8,9) has given rise to the 
erroneous suggestion of the Midrash that the offense of the 
brothers was drunkenness.
(2) A descendant of Jerahmeel (1 Ch 2:28,30).
(3) A Gibeonite (1 Ch 8:30).
(4) Son of Jeroboam I and after him for two years king of 
Israel (1 Ki 14:20; 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 Ki 
15:27-31). With the assassination of Nadab the dynasty of 
Jeroboam was extirpated, as foretold by the prophet Ahijah 
(1 Ki 14). This event is typical of the entire history of 
the Northern Kingdom, characterized by revolutions and 
counter-revolutions.
John A. Lees
                          
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