אוֹנָן
Onan, a son of Judah
Definition
Onan was the second son of Judah and the Canaanite woman Shua (Genesis 38:4). He is most famously known for his act of 'spilling his seed on the ground' to avoid fulfilling his levirate duty of producing offspring for his deceased brother, Er (Genesis 38:9). This act of disobedience led to his death by God's judgment. He is later listed in the genealogies of Judah's descendants (Genesis 46:12, Numbers 26:19, 1 Chronicles 2:3).
Biblical Usage
The name Onan appears exclusively in narrative and genealogical contexts related to the tribe of Judah. It is used six times in the Old Testament: four times in the story of Judah and Tamar in Genesis 38, and twice in tribal genealogies (Numbers 26:19, 1 Chronicles 2:3). The primary narrative usage focuses on his failure to perform his familial duty and its consequences.
Etymology
The name אוֹנָן (ʼÔwnân) is derived from the root אוֹן (ʼôn, H202), meaning 'vigor,' 'wealth,' or 'productive power.' It is a variation of the name of his older brother, אוֹנוֹ (ʼÔwnô, H207). The name likely carries a meaning related to strength or vitality, which presents a tragic irony given the nature of his story.
Semantic Range
Onan's story is the primary biblical basis for the concept of 'onanism,' though his sin was specifically his refusal to fulfill the levirate marriage obligation (Deuteronomy 25:5-10), not the physical act itself. His narrative illustrates the serious consequences of defying God's designs for family, procreation, and covenant lineage. It underscores the importance of duty within the covenant community and God's direct judgment on deliberate acts that subvert His purposes.
Onan's duty was governed by the custom of levirate marriage, where a brother was obligated to marry his deceased brother's widow to produce an heir for the dead man, thereby preserving his name and inheritance line within Israel. Onan's refusal was a severe breach of this familial and social responsibility, motivated by self-interest, as any son would not be considered his own heir. This context is essential for understanding the gravity of his action.
אוֹנוֹ (ʼÔwnô, H207) — The name of Onan's older brother, Er, from the same root meaning 'vigor' or 'wealth.'
Word Details
How this works
Hebrew definitions are from Brown-Driver-Briggs (1906) and Strong's Exhaustive Concordance (1890), both public domain. BDB was groundbreaking for its era but reflects 19th-century assumptions about Semitic etymology. Modern scholarship (HALOT, DCH) has revised many entries. Use these definitions as a starting point for exploration, not as the final word on a term's meaning in context.
Full methodology & sources →