How does regeneration relate to justification?

Regeneration and justification are both critical aspects of salvation, where regeneration is the transformative act of the Holy Spirit that gives believers a new life and nature, while justification is the legal declaration of righteousness before God on account of Christ's finished work. In Titus 3:7, after being regenerated, believers are justified by His grace, and thus become heirs of eternal life. These two works of God cannot be separated; where there is genuine regeneration, there will also be genuine justification, allowing believers to stand righteously before God.