Maybe it's a Genesis sort of thing...The beginning of Earth coming, and us humans are referred to as "snakes" (or serpentines). Maybe it's that humanity poisons the Earth's in a sacrilege sort of way. God's creations took a "long day" (gone), and not intending for the humanity to go to shits, it refers to "Day gone long" which could mean a numerous amounts of things, maybe the day of Armageddon. "We walk with insticts" could refer to we live the way we naturally do and never take thought into the beauty of Earth.
Maybe it's a Genesis sort of thing...The beginning of Earth coming, and us humans are referred to as "snakes" (or serpentines). Maybe it's that humanity poisons the Earth's in a sacrilege sort of way. God's creations took a "long day" (gone), and not intending for the humanity to go to shits, it refers to "Day gone long" which could mean a numerous amounts of things, maybe the day of Armageddon. "We walk with insticts" could refer to we live the way we naturally do and never take thought into the beauty of Earth.
That's a very shitty explanation I know...