If there be therefore any consolation in Christ, if any comfort of love, if any fellowship of the Spirit, if any bowels and mercies, If there be therefore any consolation - The ει, if, does not express any doubt here, but on the contrary is to be considered as a strong affirmation; as there is consolation in Christ, as there is comfort of love, etc.
The word παρακλησις, translated here consolation, is in other places rendered exhortation, and is by several critics understood so here; as if he had said: If exhorting you in the name of Christ have any influence with you, etc. It is extremely difficult to give the force of these expressions; they contain a torrent of most affecting eloquence, the apostle pouring out his whole heart to a people whom with all his heart he loved, and who were worthy of the love even of an apostle.
If any comfort of love - If the followers of Christ, by giving proofs of their ardent love to each other in cases of distress, alleviate the sufferings of the persecuted;
If any fellowship of the Spirit - If there be an intimate relation established among all Christians, by their being made mutual partakers of the holy Ghost;
If any bowels and mercies - If you, as persons whom I have brought to God at the hazard of my life, feel sympathetic tenderness for me now, in a farther state of suffering;