What is meant by being 'born again' in the Bible?

In John 3:3, Jesus emphasizes the necessity of being 'born again' to Nicodemus to enter the kingdom of God. This rebirth is not a physical re-entering into the mother's womb but a spiritual transformation accomplished by the Holy Spirit. Ephesians 2:8-9 elaborates on this grace through faith, emphasizing that it is not the result of human effort but a divine gift. This new birth allows believers to experience reconciliation with God and receive spiritual blessings, marking the beginning of their new life in Christ, enabling them to live according to God's will.