How do we know that Paul had a sincere desire for the Thessalonians?

In 1 Thessalonians 2:17-20, Paul writes with deep emotion regarding his separation from the Thessalonian believers. He describes being taken from them physically but emphasizes that he was present in heart. His longing to see them again, despite the obstacles presented by Satan, shows his genuine care and concern for their spiritual well-being. This is reinforced by his use of phrases like 'great desire' and referring to the Thessalonians as his 'glory and joy.' Such language not only reflects his strong attachment but also highlights the depth of pastoral love within the Apostle's ministry, which inspires contemporary believers to similarly cherish and nurture their relationships with fellow Christians.