Expositor's Bible Commentary Commentary 2 Thessalonians 3:4

"And we have confidence in the Lord touching you, that ye both do and will do the things which we command." — 2 Thessalonians 3:4 (ASV)

The faithfulness of the Lord is supplemented by the faithfulness of his people. That is why Paul can add this verse—he has confidence in Christian people. Their union with Christ counteracts the weakness of sinful human nature. Paul and his coworkers can rely on the Thessalonian believers to do what they have been taught (cf. 1 Thessalonians 4:2). By this favorable opinion, he paves the way for further instruction (cf. 3:6–15).