The ''
Jewish Encyclopedia's ''article "Sarah" notes that According to the
Jewish Encyclopedia, the recurring story has a unified purpose:
Comparison to other cultures Political marriages were common occurrences in the
Ancient Near East, which typically meant that a resident alien would offer one of his daughters to the monarch as a
diplomatic action and to protect himself and his family.
James Hoffmeier interprets the wife-sister narratives found in the Book of Genesis as reflecting that practice; in his view Abraham and Isaac were traveling in foreign territory without any daughters to offer the local ruler and attempted to create similar diplomatic relationships by presenting their wives as potential gifts.
Source criticism From the perspective of
source criticism, these three accounts would appear to be variations on the same theme, with the oldest explication being that in Gen. 12. In the past, the first and third accounts have been attributed to the
Yahwist source (or J source), and the second account has been attributed to the
Elohist source (or the E source) via source criticism. However, it has also been proposed that similarity between these narratives is because they are oral variations of one original story. Recently, it has been thought that the second and third accounts were based on and had knowledge of the first account. According to critics, such as T.D. Alexander, there are different theories about the sources but none can be proven to be flawless.
Literary analysis Scholars have also argued that the three tales are not true historic occurrences, rather purposeful tales. According to Susan Niditch, there is one wife-sister story that has many different versions, but there are inconsistencies and they all refer back to the same story. Niditch associates the wife-sister entries as potential
folklore written to target a particular audience and in hopes of conveying a message regarding the sinful nature of deception and adultery. The three wife-sister narratives are all related to each other in some way, according to George Coats, sharing common content, structure and genre for communicating the content. In all three stories a promise for progeny is not a factor in the content and the structure rather the narratives have a focus on blessing.
The wife and sister relationships Gershon Hepner concludes, through
biblical exegesis and
semantics, that it is plausible that the union of Abraham and Sarah was actually
incestuous with Sarah being Abraham's half-sister. For example, in Genesis 20:13, Abraham, talking to Abimelech, alludes to Leviticus laws or the
Holiness code, by using the phrase "loving kindness". The same word is found referring to the sin of incestuous relationships and can also take the alternative meaning of "disgrace". Abraham, in his discourse with Abimelech, could be openly confessing his "disgraceful" relations with his wife/sister Sarah but whichever translation of the word is taken, it shows Abraham's knowledge of the holiness code and specifically its prohibitions on incest, as later recorded in
Leviticus. == Rabbinic interpretation ==