He that believeth on me; not every individual soul that believeth on me; but some of those, particularly you that are my apostles, and shall be filled with the Holy Ghost in the days of Pentecost; you shall preach the gospel, and work miracles for the confirmation of the truth of the doctrine of it. Yea, and you shall do greater works than I have done: not more or greater miracles: the truth of that may be justly questioned; for what miracle was ever done by the apostles greater than that of raising Lazarus? Much less do I think that it is to be understood of speaking with divers tongues. It is rather to be understood of their success carrying the gospel to the Gentiles, by which the whole world, almost, was brought to the obedience of the faith of Christ. We never read that of Christ which we read of Peter, viz. his converting three thousand at one sermon. Because I go unto my Father, he afterwards expounds, telling us, that if he did not go away, the Comforter would not come. The pouring out of the Spirit in the days of Pentecost, was the proximate cause of those great works. Now Christ's going to the Father had an influence upon that mission of the Holy Spirit.
Related Commentaries of John 14:12
John 14:12
12 Verily, verily, I say unto you, He that believeth on me, the works that I do shall he do also; and greater works than these shall he do; because I go unto my Father.