The way of Cain is much, much deeper than that.
Apostle Paul said the "mystery of iniquity" was already at work (2 Thess.2). Apostle John said there were already "many antichrists" (1 John 2:18). The Old Testament equivalent to that group were "the workers of iniquity".
Ever since this, God has caused emnity between Satan's children of darkness and God's children...
Gen 3:14-15
14 And the LORD God said unto the serpent, Because thou hast done this, thou art cursed above all cattle, and above every beast of the field; upon thy belly shalt thou go, and dust shalt thou eat all the days of thy life:
15 And I will put enmity between thee and the woman, and between thy seed and her Seed; it shall bruise thy head, and thou shalt bruise his heel.
KJV
Cain's traits were, the first murderer, God cursed the ground to him so he could not farm, he was a builder of cities (again because he could not farm), and God set a mark upon him to give him advantage against those who might kill him.
But there's more, probably... from the ancient Babylonian cuneiform tablets...
Around 3800 B.C., Sargon the 1st, a Semite, appeared among the "blackheads" of ancient Sumer (where Iraq is today). This was a time before it was Babyonia and Babylon. Sargon's death mask is still in the British museum. He built the first city there, Erech, and he gave them knowledge of the sciences, agriculture, canal building, knowledge of the stars, and he brought the very first idol worship of the devil (Bel, or later Baal). All later forms of pagan religion began with this Sargon in ancient Sumer-Babylon.
Per Bible scholars like 17th century bishop Ussher, and 19th century E.W. Bullinger, a count from the time of Jesus' birth back through the Old Testament begats, they arrived at the date of 4004 B.C. for the time when God formed the man Adam in His Garden. Sargon appearing among the Sumerians in 3800 B.C. is only 204 years difference. Now the Assyriologist Sayce who originally derived that 3800 B.C. date for Sargon from the Babylonian tablets, decided to change it to a later date more befitting the Assyriologist theories of the day. Yet 3800 B.C. was the actual translation from the tablets. (see Bristowe's Sargon The Magnificent).
When God cast Cain out, Cain went to the "land of Nod", and took a wife and built the first city (Enoch). I believe ancient Sumer was that land of Nod, and that Sargon I was actually Cain. The Sumerians called Sargon 'son of the dragon', or 'son of Bel'.
Also recorded in those Babylonian tablets is the oldest creation account.
A lot of pastors have fallen into the trap of believing Moses got the creation account from those tablets, simply because the tablets are older. In reality, the analogies and characters are more like an old pagan ritual play. The tablet creation account is more likely Cain's, eh, Sargon's corrupted story of the creation from Adam.