“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.”
John 14:12 — Greek Interlinear
Church Fathers on John 14:12
Having said, Believe for the works’ sake, our Lord goes on to declare that He can do much greater than these, and what is more wonderful, give others the power of working them. Verily, verily, I say to you, He that believes in Me, the works that I do, shall he do also; and greater works than these shall he do.
But what are these greater works? Is it that the shadow of the Apostles, as they passed by, healed the sick; It is indeed a greater thing that a shadow should heal, than that the border of a garment should. Nevertheless, by works here our Lord refers to His words. For when He says, My Father that dwells in Me, He does the works, what are these works but the words which He spoke? And the fruit of those words was their faith. But these were but few converts in comparison with…
This is an explanation of the doctrine of miracles. It is by prayer, and invocation of His name, that a man is able to work miracles.