Why did God promise to give a new heart of flesh to His Old Testament people?

Summary

The sermon focuses on the transformation of the heart from a "heart of stone" to a "heart of flesh" through the power of the Holy Spirit. Illustrating this with Abraham's justification as presented in Romans, it highlights that both Old and New Testament believers are born again. The practical takeaway is that God's promise of a new heart through the Spirit extends to all who believe, not just Jews.