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Telescoped Genealogies: Was Rahab the Mother of Boaz?

Painting of Ruth in Boaz's Field

In a discussion about the Bible’s book of Ruth, this question came up: Was Rahab the mother of Boaz? Rahab, you may remember, was the Canaanite prostitute who hid the Israelite spies.

In the book of Ruth, the young Moabitess Ruth cares for her Israelite mother-in-law Naomi. Both are destitute widows. Ruth accompanies Naomi to Bethlehem, even though she’ll have little prospect of finding a husband to rescue her from poverty. There, she gleans grain in the field of a rich man named Boaz, who provides food and protection. Later he plays the part of kinsman redeemer by marrying Ruth and giving her a son who can inherit for her dead husband.

The question about Boaz’s relationship to Rahab comes up because it could help explain his extraordinary care for Ruth during a time Israel and Moab were on unfriendly terms, even though a closer relative refused to be a kinsman redeemer.

Was Rahab the mother of Boaz, shown in this painting of Boaz and Ruth

“Ruth in Boaz’s Field” by Julius Schnorr von Carolsfeld, 1828

Matthew 1:5’s genealogy in the New International Version says, “Salmon the father of Boaz, whose mother was Rahab.” The more literal New American Standard Bible reads, “Salmon was the father of Boaz by Rahab.” That should settle it, right?

Not quite.

Rahab Being the Mother of Boaz Presents a Problem

The problem is Matthew lists five generations from Salmon to David, but between Rahab’s meeting the spies (traditionally 1406 BC) and David’s birth (1040 BC) stretch 366 years, making the average age of the dads up where what little hair remains turns white and giving extra meaning to Boaz’s claim not to be young: [1]

Year BC

Person

Estimated Age

Event

1406

Rahab

20

Meets Israelite spies

~1376

Rahab

50

Bears Boaz

~1264

Boaz

112

Fathers Obed

~1152

Obed

112

Fathers Jesse

1040

Jesse

112

Fathers David

Although it’s possible Boaz, Obed, and Jesse were bearing sons as centenarians, there’s another possibility: Matthew may have skipped some names—just as he skipped three in verse 8 and one in verse 11. [2]

Translation Issues and Ancient Customs

According to scholars, there are both translation and custom issues involved. The Greek word translated “was the father of” could also mean “was the grandfather of” or “was the ancestor of.” Additionally, unlike today, ancient Jewish writers often telescoped genealogies—that is, shortened them to the most important names.

New Testament scholar D. A. Carson explains:

Therefore approximately four hundred years (Gen 15:13; Exod 12:40) are covered by the four generations from Perez to Amminadab. Doubtless several names have been omitted: the Greek verb translated “was the father of” … does not require immediate relationship but often means something like “was the ancestor of” or “became the progenitor of.”

Similarly, the line between Amminadab and David is short: more names may have been omitted. Whether such names properly fit before Boaz, so that Rahab was not the immediate mother of Boaz (just as Eve was not immediately “the mother of all the living,” Gen 3:20), or after Boaz, or both, one cannot be sure. [3]

So was Rahab the mother of Boaz? She was his mother or grandmother or ancestress, and one of the people God used to mold Boaz’s extraordinary tenderness for the foreign widow Ruth.

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  1. [1]Some scholars argue for a later date of 1250 BC for Joshua’s invasion. If Rahab gave birth ten years after, then the three men fathered their sons at an average age of 67 if Matthew has not telescoped between Rahab and David—more doable, though still short.
  2. [2]Verse 8 skips Ahaziah (2 Chr. 22:1), Joash (2 Chr. 22:11), and Amaziah (2 Chr. 24:27) between Jehoram and Uzziah (Azariah). Verse 11 skips Jehoiakim (2 Chr. 36:5) between Josiah and Jechoniah (Jehoiachin). Matthew 1:1 is even more telescoped: “Jesus Christ the son of David, the son of Abraham.”
  3. [3]D. A. Carson, “Matthew,” Matthew, Mark, Luke, The Expositor’s Bible Commentary, ed. Frank E. Gaebelein (Grand Rapids: Regency, 1984), 8:65.
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  1. […] Telescoped Genealogies: Was Rahab the Mother of Boaz? […]

  2. […] or great-grandmother of Boaz. Nevertheless, Rahab was definitely an ancestor of David. See Telescoped Genealogies: Was Rahab the Mother of Boaz? for more […]

  3. […] Telescoped Genealogies: Was Ruth the Mother of Boaz? […]

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