Some thoughts in a similar vein as the previous two posts.
I’ve a genealogical chart, purchased on eBay® a few years ago, that is filled with biblical names. The chart is “The Adam and Eve Family Tree” published by Good Things Company (Norman, OK, 1975), published “to improve the reading and understanding of the Bible for the glory of God.” The chart color-codes all the twelve tribes of Israel. Jesus is the last name under the tribe of Judah, and Paul is mentioned with the tribe of Benjamin. Incredibly, the names are quite readable and are expertly arranged so that everyone fits onto a 24x36 chart.
I love looking at this chart and figuring out who’s who. Under the genealogy of Esau, there are listed several “dukes”: Duke Nahath, Duke Zerah, Duke Shammah, Duke Mizzah, and others. “Dukes”? That’s the KJV rendering; the RSV translates the title “chief” and the NRSV as “clans” (Gen. 36:15-19).
I call these kinds of people “walk ons.” They're the Bible people who are only mentioned once or twice, with or without an accompanying story. Hundreds of names fill the book's pages.
Not all the Bible’s walk ons are obscure. A while back, our pastor preached on Exodus 1:8-2:10; every time he mentioned the midwife Puah (Ex. 1:15) I thought he was saying hoo-wah! But those midwives (the other was Shiphrah) have a notable part in the biblical drama. We all know the story, even if we don’t recall their names.
The Ethiopian eunuch (Acts 8:26-40) figures in only a few verses but he certainly becomes an example of how the Holy Spirit networks people; Philip came along right when the Ethiopian needed him—and they were near water for baptism!
Melchizedek’s original story is limited to three verses (Gen. 14:18-20), but what an amazing walk on! The author of Hebrews uses the king-priest Melchizedek (and the absence of a genealogy for him in a genealogy-filled book) to develop a theology of the eternal priesthood of Christ (Heb. 7:1-17).
The Queen of Sheba, too, has a surprisingly small role (1 Kings 10:1-13; 2 Chronicles 9:1-12, considering that she’s also mentioned in the New Testament (Matt. 12:42, Luke 11:31), the Qur’an (27:23-44), and is the subject of artwork, music by Handel and Gounod, and many cultural references. The unnamed monarch captured the popular imagination over the centuries.
You might be surprised how little a role Adam and Eve play as named characters in the Bible, although their influence is everywhere present. Unless I've missed some references, I don't think Eve is mentioned again by name in the Old Testament after Genesis 4:1; she appears in the New Testament in 2 Cor. 11:3 and 1 Tim. 2:13. Adam does figure in the Pseudepigrapha and other non-canonical writings.
Can you consider the four horsemen of the Apocalypse a “walk on”? LOL.