What does it mean to be born again in the context of the kingdom of God?

The concept of being born again is central to understanding one’s entry into the kingdom of God, as highlighted in the gospel. In John 3:3, Jesus affirms to Nicodemus that unless one is born again, they cannot see the kingdom of God. This new birth is not a physical rebirth but rather a spiritual transformation that is essential for understanding and participating in God's kingdom.

John the Baptist reinforces this as he differentiates between a physical lineage to Abraham and the necessity of a spiritual rebirth. It is only through God’s grace that an individual can experience this transformation, as made clear in Ephesians 2:8-9, where salvation is presented as a gift from God. The implication here is that natural descent or presumed righteousness does not grant entry into the kingdom; instead, it is through being born anew by the Holy Spirit that one is able to perceive and enter into the realities of God’s kingdom, which is fundamentally spiritual in nature (Luke 17:21).