1 Thessalonians 3:7 - Albert Barnes' Notes on the Bible

We were comforted over you - See the notes, 2Co 1:3-7; 2 Corinthians 7:6-7. The sense here is, that their steadfastness was a great source of comfort to him in his trials. It was an instance where the holy lives and the fidelity of a people did much, as will always be the case, to lighten the burdens and cheer the heart of a minister of the gospel. In the inevitable trials of the ministerial office there is no source of comfort more rich and pure than this.