so that we ourselves boast about you in the assemblies of God for your patience and faith in all your persecutions and in the afflictions which you endure.
The patience of the Thessalonians is one thing Paul mentions to other churches. They are patient and faithful, even under severe persecution. Under the most difficult times, they show such endurance and faith that Paul is led to express his gratitude to them "for your patience and faith in all your persecutions and tribulations that ye endure."