How do we know regeneration is true in Christians?

Regeneration, or the new birth, is a foundational doctrine in Reformed theology, affirming that true faith results from God's sovereign grace. In the case of Tabitha, her designation as a 'disciple' and her being 'full of good works and alms deeds' indicate the fruit of her regeneration. The Scripture highlights that regeneration is not based on human effort but is an act of God alone. The transformation seen in Tabitha’s good deeds is a manifestation of the faith that God has granted her, showcasing evidence of her status as an object of mercy. As believers, the assurance of regeneration comes from the Holy Spirit's work in our hearts, leading us to live in a way that adorns the faith we profess.