But the Lord is faithful, who shall stablish you, and keep you from evil. From evil - Απο του πονηρου may be translated, from the devil or from the evil one. They had disorderly men, wicked men, and the evil one or the devil, to contend with; God alone could support and give them the victory; he had promised to do it, and he might ever be confided in as being invariably faithful.
Related Commentaries of 2 Thessalonians 3:3
2 Thessalonians 3:3
3 But the Lord is faithful, who shall stablish you, and keep you from evil.