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yob (yobh; the King James Version Job):
Third son of Issachar (Genesis 46:13). In parallel passages (Numbers 26:24; 1 Chronicles 7:1) the name is Jashub (yashubh), which the versions in Ge also support as the correct form.
Orr, James, M.A., D.D. General Editor. "Entry for 'IOB'". "International Standard Bible Encyclopedia". 1915.