How do we know that being born again by the Spirit is true?

The truth of being born again is rooted in the transformative work of the Holy Spirit, which the Bible affirms as essential for all who come to faith in Christ. Romans 8:1 states, 'There is therefore now no condemnation to them which are in Christ Jesus,' indicating that those who have been made alive by the Spirit experience a new nature that desires to follow God's law. Additionally, the believer's ongoing struggle against sin illustrates the presence of this new life; they wrestle with the inclinations of the flesh because the Holy Spirit resides within them, creating a dichotomy between their old self and their new, spiritual identity. Thus, the regeneration of believers is evidenced by their profound internal changes and their desire to pursue righteousness.