Is the Promise of Regeneration Enunciated in the Old Testament? Regeneration of the human spirit is a cornerstone doctrine of the New Testament, taught in Jesus’ famous ‘born again’ discourse with Nicodemus. (John 3)  Likewise, St. Paul explains our restoration in scriptures such as Colossians 3:9-10.


  “You have put off the old self with its practices and have put on the
  new self, which is being renewed in knowledge after the image of its
  creator.”


Given that New Testament revelation finds its fountainhead in the Old Testament, was this experience explicitly promised by the prophets?  And where in the Old Testament is the source of the doctrine of Regeneration?
There are approximately 25 to 30 instances where regeneration is promised in the Old Testament. Below are but three of those instances, others you can find through study.


  Deuteronomy 30:6 And the Lord thy God will circumcise thine heart, and the heart of thy seed, to love the Lord thy God with all thine heart, and with all thy soul, that thou mayest live.


This was the basic promise of God's covenant with Abraham.


  Isaiah 1:25 And I will turn my hand upon thee, and purely purge away thy dross, and take away all thy tin:


God's promise to those who return to him.


  Isaiah 32:3-4 And the eyes of them that see shall not be dim, and the ears of them that hear shall hearken. The heart also of the rash shall understand knowledge, and the tongue of the stammerers shall be ready to speak plainly.


God's promise for our regenerated person and some insight into our resurrection bodies.

The Book of Job is also an enumeration regeneration of Job's person after his recognition of God as supreme.

There are many other stories in the Old testament dealing with regeneration, not only of the body but also the Soul. Looking for those specifics as we read the Bible opens a whole new world of understanding Jesus decent to the World.

Hope this helps.