We can know we are born again by the evidence of faith and transformation in our lives, which comes from the Holy Spirit.
The assurance that one is born again primarily comes from the work of the Holy Spirit, who regenerates the heart and gives the gift of faith. As stated in Philippians 1:6, God is faithful to complete the good work He has begun in us. True signs of being born again include a sincere desire to seek God, a love for His Word, and a commitment to the fellowship of believers. When individuals turn from idols and embrace the truth of the gospel, it confirms the transformative work of the Holy Spirit in their lives. Therefore, looking at the changes in our desires and actions can help affirm our regeneration.
Scripture References:
Philippians 1:6, 1 John 3:9, Galatians 5:17
Commentary