I've not given it a lot of thought, but I question whether the good and bad in us, is not by an accident, so to speak.
Then it becomes a matter of what we do with each of them.
Gens, enmity between the seeds -> two fold message there.
But just call the good and evil, two apposing seeds = a punch up going on in your head
Bible -> The seed is the word of God.
As crazy as it sounds, the entire Bible theme centers around Word, words.
Our expressed words are our person expressed.
Life is like a play on or of, words and just look at what ones words can do to others etc. LOL, look no further than the USA, Trump etc, etc.
And yet this simple message, flies by all the nests ???????????????????????????????