Onan in Smiths Bible Dictionary

(strong), the second son of Judah by the Canaanitess, "the daughter of Shua." Ge 38:4; 1Ch 2:3 "What he did was evil in the eyes of Jehovah and he slew him also, as he had slain his elder brother. Ge 38:9 His death took place before the family of Jacob went down into Egypt. Ge 46:12; Nu 26:19 (B.C. 1706.)

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