Yes, it is a spiritual war! Spirit is a new person born again, that is, the spirit of Christ; Meat, also known as the body (refers to the part of the soul-the world centered on thinking, emotion, ideas and self, not the material body). People's thoughts and criteria for judging good and evil belong to the soul (body) and come from the fruit of the tree of distinguishing good from evil (devil's deception); Spirit (the reborn newcomer) comes from the tree of life (Christ), and the battle between spirit and flesh is a spiritual battle.
God bless you!