In Catholic theology, spiritual warfare refers to the internal struggle between good and evil within the human heart. It's not a battle against demons in a literal sense, but a fight for spiritual growth. This internal conflict is where we rely on divine grace to overcome temptation and sin. It's a continuous process of moral transformation, fueled by prayer and the sacraments. This ongoing struggle is essential to our path to holiness. Through resisting temptation and actively choosing good, we cultivate virtue and deepen our relationship with God. The focus is on cooperating with divine grace to achieve inner peace and spiritual maturity.