it is a code NAME to show what God is doing in us to RAISE OUR "WILL" HIGHER hence serpent (will) lifted up:
if our will remains eating the dust, face down to the ground, it will stay without UNDERSTANDING (no legs):
the serpent in the Bible is not really a snake, but our "WILL" that was created crooked in us so we could LEARN by experience how far we can come with this intelligence that is NOT God conscious, or conscious of the HIGHER WILL, Gods will:
God is the name of a higher intelligence which is evident in nature, but lacking in people for some reason:
when Jesus comes to us it is to LIFT UP OUR WILL......stand it up.......right.....to KNOW HOW TO LIVE IN LOVE.......a word that describes compassion for all living things
hence "love your neighbor as yourself" is that UPGRADE