How do we know that Paul was genuinely thankful for the Roman believers?

Paul demonstrates his genuine gratitude for the Roman believers by his constant prayer for them, stating, 'For God is my witness, whom I serve with my spirit in the gospel of His Son, that without ceasing I mention you always in my prayers' (Romans 1:9). His acknowledgment that their faith is proclaimed in all the world illustrates not just his observance of their faith but also a heartfelt appreciation for what God has accomplished among them. Paul’s gratitude isn’t based on their actions or numbers but on the transformative power of the gospel reflected in their lives.