But when the Comforter is come, whom I will send unto you from the Father, even the Spirit of truth, which proceedeth from the Father, he shall testify of me:
26. But when the Comforter is come. After having explained to the apostles that the Gospel ought not to be less highly valued by them, because it has many adversaries, even within the Church itself; Christ now, in opposition to the wicked fury of those men, produces the testimony of the Spirit, and if their consciences rest on this testimony, they will never be shaken...
Christ having spoken of the great opposition which his gospel was likely to meet with in the world, and the hardships that would be put upon the preachers of it, lest any should fear that they and it would be run down by that violent torrent, he here intimates to all those that were well-wishers to his cause and interest what effectual provision was made...
Commenting on John 15:26-27
Verse 26. (d) "Comforter is come" (e) "he shall testify of me"