Fausset's Bible Dictionary
("father of error".) The beautiful young woman of Shunem in Issachar, who cherished David in his old age. Adonijab persuaded Bathsheba to entreat Solomon to give her to him in marriage. This Solomon construed into virtual treason: as regal rights followed the possession in marriage of a deceased king's wife, and caused him to be killed (1 Kings 1:1-4; 1 Kings 2:13-25)
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Fausset, Andrew R. Entry for 'Abishag'. Fausset's Bible Dictionary. https://www.studylight.org/dictionaries/eng/fbd/a/abishag.html. 1949.