1 Thessalonians 4:6

4:6 In this matter no one should violate the rights of his brother or take advantage of him, because the Lord is the avenger in all these cases, as we also told you earlier and warned you solemnly.

1 Thessalonians 4:10

4:10 And indeed you are practicing it toward all the brothers and sisters in all of Macedonia. But we urge you, brothers and sisters, to do so more and more,