Some related anomalies in Matthew's genealogy of the Christ
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Matthew's purpose is to demonstrate that Jesus, the Messiah, has a legal right to sit on David's throne (perhaps answering the Lord's own question in Matthew 22:42). Although there are many kings in the genealogy, David is the only one who is described as ‘the king’, twice. Since David's throne has to do with the covenant people, and that covenant began with Abraham, the genealogy does as well. It ends with Joseph, Jesus' ‘father’ by adoption, since Jesus had none of Joseph's genes.*Indeed He could not, because of the prophesies in Jeremiah 22:30 and 36:30, wherein Jeconiah and Jehoiakim are cursed. However, Jesus received some of David's genes through Mary (please see the note that accompanies Luke 3:23 in my translation). It was sufficient to Matthew's purpose to show that Joseph was a linear, and legal, descendant of David, the number of intervening generations was beside the point. Matthew's Gospel was directed primarily to a Jewish audience, to whom legal rights were important.
Matthew divides his genealogy of the Christ into three groups of fourteen ‘generations’. A comparison of his genealogy with the OT record indicates that it is not a ‘normal’, straightforward genealogy—there are some anomalies.I believe that Matthew composed his Gospel under divine guidance, which leads me to the conclusion that the anomalies were deliberate, on God's part. Therefore, my attempt to unravel the anomalies tries to understand the Holy Spirit's purpose in introducing them into the record. In an effort to understand the purpose behind the anomalies, I will begin with the second group, which may be said to be made up of sovereign kings of Judah. Going back to the OT we discover that there were seventeen such kings, not fourteen. But, Matthew says ‘generations’, not reigns, and since Ahaziah reigned only one year, Amon only two, and Abijah only three, they can be assimilated into the fourteen generations. That said, however, we next observe that Abijah and Amon are duly included in the list, while Ahaziah is not, followed by Joash and Amaziah. The three excluded names form a group between Jehoram and Uzziah.
Verse eight says that “Joram begot Uzziah”, the verb ‘begot’ being the same one used throughout, but in fact Uzziah was Joram's (Jehoram's) great-great-grandson. So we see that ‘begot’ refers to a linear descendant, not necessarily a son. We also see that the number ‘fourteen’ is not being used in a strictly literal sense (whatever the author's purpose may have been). It also appears that ‘generation’ is not being used in a strictly literal sense. It follows that we are looking at an edited genealogy, edited in accord with the author's purpose.
In an effort to understand why the group of three was excluded, I ask: What might they have in common? They had in common genes from Ahab and Jezebel, as also a direct spiritual and moral influence from them. Ahaziah's mother was Athaliah, daughter of Ahab and Jezebel, so 50% of his genes were from Ahab. 2 Kings 8:27 says that Ahaziah was a son-in-law of the house of Ahab, referring to the mother of Joash, so 75% of his genes were from Ahab. Since Joash married Jehoaddan of Jerusalem, the contamination in Amaziah was down to 37%, and then in Uzziah it was below 20%.It was Dr. Floyd N. Jones who started me thinking along this line (Chronology of the Old Testament: A Return to the Basics, Kings Word Press, 1999, pp. 38-42). This is my best guess as to why that group was excluded; a rebuke after the fact. (Matthew is giving an edited genealogy of the Christ, and Ahab's genes were definitely undesirable.)
We come now to another anomaly: 14 x 3 = 42, but only 41 names are given; what to do? We begin by noticing that both David and Jeconiah are mentioned on both sides of a ‘boundary’. I will consider the second boundary first. Verse eleven says that “Josiah begot Jeconiah and his brothers”, passing over Jehoiakim, Jeconiah's father. But according to the Record, it was Jehoiakim who had “brothers”, not Jeconiah. Since we need the real Jeconiah in the third group to make fourteen names, I place Jeconiah in the third group—counting both Jeconiah and Christ we get fourteen names.§Of course, if four people were omitted from the second group, some may also have been omitted from the third, but we have no way of knowing, and it would make no difference to the purpose of this genealogy. But why was Jehoiakim omitted? So far as I know, he was the only king who had the perversity to actually cut up a scroll with God's Word and then throw it in the fire, Jeremiah 36:23, and the curse that follows in verse 30 is stated to be a consequence of that act. If we count David in the second group, Jehoiakim would make fifteen. But without Jehoiakim we need David in the second group to make fourteen. But that raises another difficulty: we also need David in the first group, to make fourteen. Because of the “brothers”, I consider that the ‘Jeconiah’ before the captivity actually stands for Jehoiakim, whose name is omitted because of his heinous crime in destroying the scroll. In that event, we have fourteen without David, so he can be assigned to the first group.
If the second group is made up of kings, the first group is made up of patriarchs. Acts 2:29 calls David a ‘patriarch’, so we may not disqualify him on that basis, but of course he is better known as a king—indeed he is expressly called that in the genealogy (the only one who is). Although David may be both patriarch and king, he may not be two people, nor two generations. In consequence, I am decidedly uncomfortable with the proposal that David must be placed in both groups—we should neither split him in two, not double him. To my mind, he fits better in the second group, but that would leave only thirteen for the first one. Enter Rahab and Ruth (and if four people were omitted from the second group, why could not some also be omitted from the first?). However, I tentatively assign David to the first group, making fourteen. Since David is used as the first boundary, and the purpose of the genealogy is to establish Jesus' right to David's throne, his name is repeated, but I do not count him in the second group.
There were 340 years between the death of Joshua and the birth of David, and Salmon married Rahab while Joshua was still alive, presumably. That sort of obliges Boaz, Obed and Jesse to do their begetting at age 100, or thereabouts (perhaps not impossible, but certainly improbable). But what if ‘begot’ is being used for a grandson, as we have already seen? (Josiah begot Jeconiah, with no mention of Jehoiakim.) If Athaliah's genes were enough to disqualify Ahaziah, what about Rahab's genes? She was not even an Israelite, and worse, she was a prostitute. Now the Law says some rather severe things about prostitutes.*However, “the law was given through Moses, but grace and truth came through Jesus Christ” (John 1:17). This being an edited genealogy of the Messiah, perhaps Rahab, and the other women, were included to emphasize the grace of the Messiah. “You shall not bring the wages of a harlot or the price of a dog [catamite] to the house of the LORD your God… for both of these are an abomination to the LORD your God” (Deuteronomy 23:18). For a priest to marry a harlot would profane his posterity (Leviticus 21:13-15), so how about an ancestor of the Messiah? Of course it is possible for a prostitute to be saved, but why was she even mentioned? And why were Tamar, Ruth, and Uriah's wife mentioned? Women were not normally included in genealogies.None of the decent, honest, honorable, responsible mothers are mentioned, only ‘exceptions’!
Now consider Ruth. She was a Moabitess, and according to Deuteronomy 23:3 a Moabite could not enter the assembly of the LORD to the tenth generation. [To me it is an astonishing example of the grace of God that she was included in the Messiah's line.] She embraced Naomi's God, but what about her genes? ‘Ten generations’ has to do with genes, not spiritual conversion. Moab was a son of Lot, and the first ‘Moabite’ would be his son, probably a contemporary of Jacob. From Jacob to Salmon we have seven generations, certainly fewer than ten, so Ruth could not enter. Could it be possible that Rahab and Ruth each represent a missing generation? Could that be why they are mentioned?Tamar had suffered a severe injustice, and David's sin with Bathsheba was unusually perverse (cowardly murder), but Rahab was probably a victim of circumstances, and Ruth was certainly not to blame for having been born a Moabitess. If we divide 300 years by five, then the average begetting age would be 60, certainly within the bounds of reason (and if more than two generations were skipped, the number would be further reduced). I repeat that this is not a ‘normal’ genealogy. Why did Matthew want three ‘equal’ groups, and why did he choose ‘fourteen’? Perhaps for stylistic (symmetry, balance) and mnemonic reasons. However, my concern has been to address any perceived errors of fact, which an inspired Text should not have.
To conclude: Matthew gives us an edited genealogy of the Messiah. If on the one hand it emphasizes the Messiah's grace, on the other it reflects the Messiah's holiness—He cannot overlook sin and its consequences (the four excluded names in the second group are due to that holiness). If the four women were included as a reflection of the Messiah's grace, it is also true that the consequences of sin are not hidden—the fourth is called simply ‘Uriah's wife’ (not ‘widow’, even though Solomon was conceived after the murder of Uriah—David did not marry a widow, he stole someone else's wife).

*^ Indeed He could not, because of the prophesies in Jeremiah 22:30 and 36:30, wherein Jeconiah and Jehoiakim are cursed. However, Jesus received some of David's genes through Mary (please see the note that accompanies Luke 3:23 in my translation).

^ I believe that Matthew composed his Gospel under divine guidance, which leads me to the conclusion that the anomalies were deliberate, on God's part. Therefore, my attempt to unravel the anomalies tries to understand the Holy Spirit's purpose in introducing them into the record.

^ It was Dr. Floyd N. Jones who started me thinking along this line (Chronology of the Old Testament: A Return to the Basics, Kings Word Press, 1999, pp. 38-42).

§^ Of course, if four people were omitted from the second group, some may also have been omitted from the third, but we have no way of knowing, and it would make no difference to the purpose of this genealogy.

*^ However, “the law was given through Moses, but grace and truth came through Jesus Christ” (John 1:17). This being an edited genealogy of the Messiah, perhaps Rahab, and the other women, were included to emphasize the grace of the Messiah.

^ None of the decent, honest, honorable, responsible mothers are mentioned, only ‘exceptions’!

^ Tamar had suffered a severe injustice, and David's sin with Bathsheba was unusually perverse (cowardly murder), but Rahab was probably a victim of circumstances, and Ruth was certainly not to blame for having been born a Moabitess.