This is a perpetual covenant that shall not be forgotten. Repentance is the act of turning from and forsaking sin. Justification is a state and an act. It is the state of being void of offense toward God by the act of God's forgiveness of the transgressions for which one has repented. Regeneration is an act of God performed in the justified heart whereby new, spiritual life is generated.
Regeneration is simultaneous with the new birth.
Also see, Matt. To be born again is to become a new creature in Christ and a child of God. This new birth is the result of repentence, justification and regeneration and is accompanied by a definite inner witness. The new birth is a prerequisite for the experience of sanctification. Sanctification is the second definite work of grace, an instantaneous work wrought in the regenerated heart by the Holy Ghost with the blood of Christ.