How do we know spiritual birth is true?

The truth of spiritual birth is demonstrated in the believer's life through their love for God and obedience to His commandments. 1 John 5:3 emphasizes that 'For this is the love of God, that we keep his commandments.' When a person is spiritually reborn, their desires change, and they increasingly find joy and purpose in following Christ. The evidence of this change—overcoming the world through faith and loving one's brethren—confirms the reality of their new birth as being both miraculous and transformative.