Why is spiritual rebirth essential for Christians?

Spiritual rebirth is essential for Christians because it is the means by which they enter into a new life, having partaken in the first resurrection. John 3:7 emphasizes that one must be born again to see the kingdom of God. This rebirth is a work of the Holy Spirit that transforms believers into new creations, enabling them to live in accordance with God's will. It marks the beginning of a relationship with Christ, who is the source of eternal life, granting believers assurance that they are blessed and holy in His sight.