When Jesus said, "Greater things shall ye do, what did he mean by that?" What is greater than the miracles The Apostles performed?
Joh 14:12 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.
Joh 21:25 And there are also many other things which Jesus did, the which, if they should be written every one, I suppose that even the world itself could not contain the books that should be written. Amen.
The truth is nobody can outdo Jesus when He was on earth in miracles, and also Jesus did miracles that was not common place for a disciple to do which is to testify that He is the Son of God, the Savior.
How many people do we know that have walked on water besides Peter for a short time, and fed thousands of people with a few fishes and a loaf of bread, or put mud in a persons eyes and they had eyeballs, or withered a fig tree, or calmed the roaring storm and wind, or knew of a fish that has a coin in it and a disciple got it, or put the coin there Himself, or was transfigured with Moses and Elijah, and such like that, and how many disciples did those type of miracles.
Jesus spent three and one half years of preaching the Gospel, healing, miracles, in great number, and the saints can do the same, but Jesus did miracles that are not common place for a saint to do and that is because it testified that He is the Son of God.
Which Jesus told Thomas that he believed because he saw, but blessed is he that has not seen but believes, because it is based on faith, and the disciples, and much Jews would see things that we would not see.
But the saints can do the common miracles that Jesus did that have to do with the welfare of people such as preaching the Gospel, and healing.
But how can a saint outdo Jesus in those common works.
So Jesus must have meant that the Church as a group will do the works that He did, and do greater works for they can reach out to more people to help them, and preach the Gospel and heal, and feed and clothe the poor and needy.
As an individual I do not see how anybody can outdo Jesus, but the Church as a bigger group can impact more people, and reach out farther than Jesus could do at the time He was on earth, and the only one as part of the Church so far being the chief cornerstone.
The disciples and Paul, and people that followed them did many miracles of healing, but you never read of them doing the miracles that Jesus did like seem to not be common place for a saint.