2:13 I had no rest in my spirit. Because he had expected to meet Titus there and to get news concerning the state of affairs at Corinth. Hence he went on soon, hoping to meet him on the way to Macedonia.
2:13 I had no rest in my spirit - From an earnest desire to know how my letter had been received. Because I did not find Titus - In his return from you. So I went forth into Macedonia - Where being much nearer, I might more easily be informed concerning you. The apostle resumes the thread of his discourse, 2Cor 7:2, interposing an admirable digression concerning what he had done and suffered elsewhere, the profit of which he by this means derives to the Corinthians also; and as a prelude to his apology against the false apostles.
2:12-17 A believer's triumphs are all in Christ. To him be the praise and glory of all, while the success of the gospel is a good reason for a Christian's joy and rejoicing. In ancient triumphs, abundance of perfumes and sweet odours were used; so the name and salvation of Jesus, as ointment poured out, was a sweet savour diffused in every place. Unto some, the gospel is a savour of death unto death. They reject it to their ruin. Unto others, the gospel is a savour of life unto life: as it quickened them at first when they were dead in trespasses and sins, so it makes them more lively, and will end in eternal life. Observe the awful impressions this matter made upon the apostle, and should also make upon us. The work is great, and of ourselves we have no strength at all; all our sufficiency is of God. But what we do in religion, unless it is done in sincerity, as in the sight of God, is not of God, does not come from him, and will not reach to him. May we carefully watch ourselves in this matter; and seek the testimony of our consciences, under the teaching of the Holy Spirit, that as of sincerity, so speak we in Christ and of Christ.