But the Lord is faithful, who shall stablish you, and keep you from evil.
Faithful - alluding to "faith" (2 Thessalonians 3:2): though many will not believe, the Lord ('Aleph (') A C Delta G. But B, 'God') is still to be believed as to His promises (1 Thessalonians 5:24; 2 Timothy 2:13). Faith on man's part answers to faithfulness on God's part.
Stablish you. Though wicked men were assailing himself, he turns away from asking prayers for HIS deliverance (2 Thessalonians 3:2: so unselfish was he), to express his assurance of THEIR establishment in the faith and preservation from evil. This assurance exactly answers to his prayer, 2 Thessalonians 2:17, "Our Lord ... stablish you in every good word and work." So the Lord's prayer, "Lead us not into temptation, hut deliver us from evil:" where, as here (in antithesis to "the Lord") is included, 'from the evil one:' the great hinderer of "every good word and work." Compare Matthew 13:19; Ephesians 6:16; 1 John 5:18.