7:2–4 Here, Paul resumes his train of thought from 6:13, that the Corinthians should open wide their hearts to him just as he has done to them. This incidently shows that 6:14–7:1 must be integral to the present context, for otherwise 7:2 would sound redundant coming directly after 6:13. The intervening exhortation in 6:14–7:1 explains how they are to open their heart. As was shown above, 6:14–7:1 exhorts the Corinthians to put into practice the implications of the new covenant for their sanctification, particularly as it pertains to the situation with the opponents. By separating from the opponents (and other pernicious influences), the Corinthians, who are in Paul’s heart (7:3; cf. 3:2!), open their Spirit-filled hearts to the apostle and remain a “letter of Christ” written by the Spirit…