In this verse, the Apostle Paul is addressing the nature of true faith and identity. He explains that being a true follower of God is not about outward appearances or rituals, such as physical circumcision, which was a significant sign of the covenant for Jews. Instead, Paul emphasizes that true identity as God's people is defined by an inward transformation of the heart. This transformation is brought about by the Holy Spirit, not by merely following religious laws or codes.
Paul's message is that God values the sincerity and authenticity of one's faith, which is reflected in the heart's condition. This inward change signifies a deeper, spiritual circumcision, where the heart is aligned with God's will. Such a transformation leads to a life that seeks God's approval rather than human praise. This teaching encourages believers to focus on their relationship with God, allowing the Holy Spirit to guide and shape their lives from within. It highlights the importance of inner faith over external observance, calling for a genuine commitment to living according to God's desires.