The term “regenerated” is equivalent to the expression of being “born again.” There are only two places in the Bible where the expression “regeneration” occurs. In Titus 3:5, it is used to represent the reforming and justifying influences of faith in the Redeemer, the Lord Jesus Christ; and again, in Matthew 19:28, where it is used to represent that glorious moral, social, political, religious and physical change that will be introduced by the Messiah who says, “Behold, I make all things new” (Revelation 21:5). 

The process of “regeneration” is now going on in the experiences of the members of the church of Christ – faithful Christians. These have been begotten of the holy spirit and must grow and develop as “new creatures,” and will be “born” of the spirit in the resurrection, when as glorious spirit beings in heaven, they will be invisible and powerful and can then go and come as the wind (John 3:8). 

In the regeneration of the world, after the church has experienced the new birth, the human race will be restored to its primitive conditions of perfection and life as represented in Adam in the Garden of Eden, the “times of restitution of all things spoken by the mouth of all the holy Prophets” (Acts 3:19-21).

Additional Resources:
Christian Questions Podcast 
Episode #1110: “Are Christians Really Born Again?” 
Finding the true meaning and implications of being “born again”
Video Preview  
CQ Rewind Show Notes

Christian Questions Podcast
Episode #1324: “What Is the New Creation?”
The profound results of God creating something never seen before
Preview Video
CQ Rewind Show Notes

Booklet (PDF) “What Everyone Should Know About Being Saved”