How do we know that regeneration and being born again mean the same thing?

Regeneration and being born again are two nuances of the transformative process whereby an individual becomes a member of God's kingdom. The New Testament uses these terms in different contexts—regeneration often refers to cosmic renewal, while being born again is more focused on individual conversion. However, they ultimately describe the same work of the Spirit which leads to a person's new life in Christ. Understanding this theological nuance provides clarity on how believers participate in the larger narrative of redemption, signifying the beginning of their new identity in Christ.