Why is Jesus being all in regeneration crucial for Christians?

Regeneration, as taught in John 3, emphasizes that 'except a man be born again, he cannot see the kingdom of God.' This process involves the Holy Spirit breathing life into the spiritually dead, a work that only Christ can accomplish. Apart from being made alive by Him, individuals remain blinded by sin and unable to pursue God. Thus, understanding Christ's role in regeneration is pivotal for Christians, as it assures them that their new life is a gift from God and that they rely on His power for spiritual awakening and transformation.