Cainan

Two figures carry this name in the UPDV. The first is an antediluvian patriarch, fourth from Adam in the Sethite line, whom the Genesis and Chronicles toledot spell "Kenan." The second appears only in Luke's genealogy of Christ, where he is named between Arphaxad and Shem as a link in the post-flood line. Luke's text spells both figures "Cainan." Together these references place the name on either side of the flood and inside the genealogy that runs from Adam to Jesus.

The Antediluvian Patriarch

In the Genesis 5 toledot the name belongs to the son of Enosh and the father of Mahalalel. Enosh, in his ninetieth year, "begot Kenan" (Gen 5:9), and lived 815 years afterward (Gen 5:10). Kenan in turn "lived seventy years, and begot Mahalalel" (Gen 5:12), continuing 840 years more (Gen 5:13). His total lifespan is given as part of the Genesis pattern of long antediluvian ages: "and all the days of Kenan were 910 years: and he died" (Gen 5:14). The chapter then moves on to Mahalalel and Jared (Gen 5:15).

The 1 Chronicles 1 register preserves the same sequence in compressed form, listing only the names: "Kenan, Mahalalel, Jared" (1Ch 1:2). The position is identical — fourth from Adam, between Enosh and Mahalalel.

The Lifespan Pattern

Kenan's 910-year lifespan sits inside the cluster of Sethite figures whose ages Genesis records: Seth at 912 (Gen 5:8), Enosh at 905 (Gen 5:11), Kenan at 910 (Gen 5:14), and the line continuing onward. The recurring formula "and all the days of [N] were [N] years: and he died" frames Kenan among the examples of long life that mark the pre-flood generations.

Luke's Genealogy

Luke's genealogy of Christ traces the line backward from Joseph to Adam, and the name "Cainan" surfaces twice in the chain. At Lu 3:36 he stands between Arphaxad and Shem in the post-flood sequence: "the [son] of Cainan, the [son] of Arphaxad, the [son] of Shem, the [son] of Noah, the [son] of Lamech." One verse later the antediluvian Cainan appears in his expected slot between Mahalaleel and Enos, where the chain reads "the [son] of Methuselah, the [son] of Enoch, the [son] of Jared, the [son] of Mahalaleel, the [son] of Cainan" (Lu 3:37).

The Lukan list thus carries both figures, in the order: an earlier Cainan above Mahalaleel (matching the Genesis 5 / 1 Chronicles 1 patriarch) and a later Cainan above Arphaxad. The same five-name window in Lu 3:36 is what places the post-flood Cainan inside the lines of Lamech, Shem, and Arphaxad as Luke renders them.

Position in the Chain to Christ

Within the genealogy that runs to "the [son] of Adam, the [son] of God," the name is one of the rungs between the patriarchal high points. Lu 3:36 ties the post-flood Cainan to Shem and Lamech — bracketing him with the figures the Genesis flood narrative makes central — while Lu 3:37 ties the antediluvian Cainan to Enoch and Methuselah, the long-lived predecessors of the flood. The same name therefore appears on both sides of the flood in Luke's chain, framing the genealogy's transition from the pre-flood toledot of Genesis 5 to the post-flood line that Genesis 11 carries forward.