How do we know if we have eternal life?

1 John 5:13 assures believers of their eternal life by affirming, 'These things have I written unto you that believe on the name of the Son of God; that ye may know that ye have eternal life.' This verse underscores the importance of faith as the means through which believers can attain assurance of their salvation. In the context of John's writings, having faith in Christ and understanding the truths of the Gospel are essential for experiencing the assurance of eternal life. Furthermore, the transformation evident in a believer's life and the inner witness of the Holy Spirit also contribute to this assurance. Believers are encouraged to reflect on their understanding of the Gospel and their relationship with Christ to confirm their standing in Him.