And we have confidence in the Lord - Not primarily in you, for you have hearts like others, but in the Lord. It is remarkable that when Paul expresses the utmost confidence in Christians that they will live and act as becomes their profession, his reliance is not on anything in themselves, but wholly on the faithfulness of God. He must be a stranger to the human heart who puts much confidence in it even in its best state; see Philippians 1:6; Philippians 4:7; 2 Timothy 1:12; compare Jude 1:24; Revelation 3:10; Proverbs 28:26.
Related Commentaries of 2 Thessalonians 3:4
2 Thessalonians 3:4
4 And we have confidence in the Lord touching you, that ye both do and will do the things which we command you.