What does the Bible say about the conflict between the spirit and the flesh?

In Romans 7:25, the apostle Paul describes a significant conflict within every believer: while his mind serves the law of God, his flesh serves the law of sin. This illustrates the dual nature of a Christian, where the new birth results in a desire to serve God, yet the flesh continues to oppose this divine calling. Paul’s experience is not unique; all Christians share this struggle. The new nature, born of the Holy Spirit, seeks righteousness, whereas the flesh, tied to earthly desires, remains in enmity against God's law. The acknowledgment of this internal warfare is vital for Christians to understand as they navigate their spiritual lives.