13:10 Paul did not want to deal severely with the Corinthians by punishing the offenders (12:21). He wanted to exercise his apostolic authority in a positive way, but his ministry required him both to strengthen and to tear . . . down (cp. Jer 1:10). • to strengthen you (or to build you up): This is Paul’s favorite expression for a stable Christian community (see Eph 4:12), in which the Lord lives both in and among the believers (2 Cor 13:5).

13:11 These last words are Paul’s final instructions. • Be joyful: See also Phil 3:1; 4:4. • Grow to maturity: See study note on 2 Cor 13:9—Paul’s encouragement might be that they aim for restoration. • Encourage each other: The need for encouragement has been very prominent in 2 Corinthians, beginning with 1:3-7. • Live in harmony: Literally Be of the same mind (as in Phil 2:1-4).

13:1-2 Announcing his intention to return to Corinth the third time (see study note on 12:14-15), Paul found confirmation of his plan in the Scriptures. The reason for this quotation is not clear, but perhaps, given the context of Deut 19:15, Paul wanted to warn them that every transgression (listed in 2 Cor 12:20-21) would be judged on his arrival. The two or three witnesses against the Corinthian offenders were Paul’s letters or visits and the promise of his coming the third time.