How would you explain the concept of Moshiach to a 4 year old?
If you speak of Messiah as a concept, then all you do is lay the ground work for building a golden calf, and claim your own completion.
Lucifer the serpent came along and claimed his own completion outside of God's word. They did not enter the Sabbath Day rest.
When God said, the seed of the woman will crush the serpents head, God was not relating a concept.