What is the meaning of being 'born again' according to the Bible?

Being 'born again' signifies a spiritual transformation enabled by God's sovereign grace. John 1:13 clarifies that this new birth is not the result of human effort, but it arises from God's will and power. It represents a profound change in a person's nature, where they are made alive in Christ and given the right to be called children of God. This spiritual rebirth is essential for salvation and points to the necessity of being regenerated by the Holy Spirit, which enables believers to respond to God’s call with faith.