"..he will crush your head, and you will strike his heel.”
Right after that horrible moment in the garden, when Adam & Eve decide to eat the fruit, death and craziness entered the world. God's punishment came & this broken relationship with our Creator, but there is this silver lining, this promise that we hear from God.
My son is coming one day. The snake will try him, but my son will crush him. Jesus, the snake killer.
Go tell the world they don't have to fear the snake anymore.