How do we know the struggle against sin is true?

The Apostle Paul’s experience in Romans 7 vividly describes the tension between the desire to do good and the reality of sin residing in our members. He writes, 'For I do not do the good I want, but the evil I do not want is what I keep on doing' (Romans 7:19). This internal conflict is a hallmark of the Christian life; it points to our new nature at war with the old sinful nature that still clings to us. The realization of this struggle serves as evidence of the transformative work of the Holy Spirit in the lives of believers, who are now aware of their sin and desire to pursue holiness.