Seth was the son God gave Adam and Eve to replace the murdered Abel, and he became the head of the spiritual line leading toward Noah and the Redeemer.
In Genesis 4:25, Eve names Seth because God appointed another seed in Abel's place. Les Feldick explains that Satan prompted Cain to murder Abel, but God sovereignly responded with Seth, making him the beginning of the godly, spiritual line that eventually reached Noah. Seth's significance is therefore tied to the continuation of the promised seed-line.
Genesis 4:25 — Eve names Seth as God's appointed replacement for Abel, which is the foundational answer to who Seth was.
Genesis 4:26 — Records the birth of Seth's son Enos and the beginning of calling on the LORD, showing why Seth's line was significant.
The Bible identifies Seth in Genesis 4:25: "And Adam knew his wife again; and she bare a son, and called his name Seth: For God, said she, hath appointed me another seed instead of Abel, whom Cain slew." Genesis 4:26 continues: "And to Seth, to him also there was born a son; and he called his name Enos: then began men to call upon the name of the LORD." The genealogy of Genesis 5 also opens with Seth: "And Adam lived an hundred and thirty years, and begat a son in his own likeness, after his image; and called his name Seth" (Genesis 5:3). The record later notes, "And Seth lived an hundred and five years, and begat Enos" (Genesis 5:6).
Les Feldick stresses that Seth was not just another birth in the family record. Reviewing Genesis 5, Les says Seth came on the scene as "a replacement for Abel, who had been murdered earlier by Cain," and that his genealogy marks "the beginning of what we would call the spiritual line." He notes that Abel had been in the line of the seed of the woman, so when Satan prompted Cain to murder him, Satan likely thought he had won. But God, in His sovereignty, came back with "a replacement for Abel in the man Seth." Les also sets Seth's line over against Cain's: Cain went out from the presence of God and produced a civilization that was technologically advanced but without God and motivated by Satan, while the line of Seth maintained a relationship with Jehovah and began to call on His name. The genealogy of Seth runs down through Enos, Enoch, Methuselah, and eventually to Noah; after the flood, Noah's sons Ham, Shem, and Japheth repopulated the earth.
Les teaches that Abel was in the line of the "seed of the woman," so Satan prompted Cain to murder him, thinking he had won. Yet God, in His sovereignty, came back with Seth as a replacement. Seth was not merely another son; he was the divinely provided continuation of that spiritual line.
Les identifies Seth as "the head of the spiritual line" after Abel. Seth's son was Enos, and the line continued through Enoch and Methuselah until Noah. The godly descendants of Seth maintained a relationship with Jehovah and were the ones who began to call on the name of Jehovah.
Les contrasts "the ungodly line of Cain" — materialistic and technological, but without God and motivated by Satan — with the "godly line of Seth," who remained separated from the worldly community and maintained a relationship with Jehovah. This contrast underscores why Seth was significant.
Who Did Cain Marry? & The Mystery of Enoch (Genesis 4-5 Bible Study)
In other words, someone who was trying to attack him. Verse 24, if Cain shall be avenged sevenfold, truly Lamech seventy and sevenfold. Now I can't put a lot on that except to say that here again, there was no human government or a system of justice to maintain law and order.
Seth as Replacement for Abel
Les explains that Seth came "on the scene as a replacement for Abel, who had been murdered earlier by Cain," and that Seth's genealogy marks "the beginning of what we would call the spiritual line."
Seth's Line Through Noah
Les traces the line of Seth down the genealogies until reaching Noah, then notes Noah's three sons: Ham, Shem, and Japheth.
Head of the Spiritual Line
Les presents Seth as "the head of the spiritual line" after Abel, with his son Enos beginning the sequence that continues through Enoch and Methuselah down to Noah.
A Godly Line Calling on Jehovah
Les contrasts Seth's godly line with the worldly, materialistic line of Cain, noting that Seth's descendants "maintained a relationship with Jehovah God" and that "then began men to call upon the name of Jehovah."
Contrast with Cain's Civilization
Les reinforces that Cain's natural posterity was motivated by Satan after Cain turned from God, which highlights the distinct, spiritual character of Seth's line.
God's Sovereign Replacement
Les teaches that Abel was in the line of the seed of the woman and that Satan prompted Cain to murder him, thinking he had won; God, however, sovereignly provided Seth as the replacement.
Why the New Testament Starts With Abraham — Matthew 1:1 Explained
In fact, as far along as Abraham, which is 2,000 years after Adam, Abraham with God's blessing still marries a half-sister, and there was nothing wrong with Isaac, and so God did not put a taboo on marrying close relatives until sometime even after Abraham, because by now the genetic pool is being weakened, and you know the problems that arise.
Genesis 4:25: And Adam knew his wife again; and she bare a son, and called his name Seth: For God, said she, hath appointed me another seed instead of Abel, whom Cain slew.
This is the verse where Eve identifies Seth as the God-appointed replacement for Abel.
Genesis 4:26: And to Seth, to him also there was born a son; and he called his name Enos: then began men to call upon the name of the LORD.
This verse places Seth's son Enos in the narrative and marks the first public calling on the LORD's name.
Genesis 5:3: And Adam lived an hundred and thirty years, and begat a son in his own likeness, after his image; and called his name Seth:
This verse places Seth in the official genealogy of Adam.
Genesis 5:6: And Seth lived an hundred and five years, and begat Enos:
This verse starts the record of Seth's own family line.
Seth was the son Adam and Eve had after Cain killed Abel. Eve named him Seth because, as she put it, God had appointed her "another seed instead of Abel, whom Cain slew" (Genesis 4:25).
Les Feldick explains that Abel was in the line of the seed of the woman and that Satan used Cain to murder him, thinking he had stopped that line. God, however, sovereignly provided Seth to replace Abel and continue the spiritual line that would lead toward the Christ.
Seth's line was the godly line that called on the name of Jehovah, in contrast to Cain's godless civilization. It continued from Seth through Enos, Enoch, Methuselah, and Noah, preserving the line through the flood and ultimately from Shem to Abraham.
Watch the Teaching: Who Did Cain Marry? & The Mystery of Enoch (Genesis 4-5 Bible Study)