Brother. The Hebrew word is used in various senses in the Old Testament, as,
1. Any kinsman, and not a mere brother; that is, nephew, Genesis 13:8; Genesis 14:16, husband, Song of Solomon 4:9.
2. One of the same tribe. 2 Samuel 19:13.
3. Of the same people, Exodus 2:11, or even, of a cognate people. Numbers 20:14.
4. An ally. Amos 1:9.
5. Any friend, Job 5:15.
6. One of the same office. 1 Kings 9:13.
7. A fellow man. Leviticus 19:17.
Metaphorically, of any similarity, as in Job 30:19. The Greek word, adelphos, has a similar range of meanings, in the New Testament.
More than 4,500 subjects and proper names are defined and analyzed with corresponding Scripture references. Bible students have used "Smith's Bible Dictionary" since its introduction in the 1880s, making it a trustworthy classic.Wikipedia
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