And greater works than these works of healing will he show him. Here the term ἔργα is used for the first time in this Gospel. It becomes the recognized phrase by which Christ describes what the world regards as "signs and wonders," "miracles" of power or grace; but it actually connotes the simple activity of God, the normal operation of his hand.
Greater manifestations than physical quickening or revival namely, the mighty changes of thought and life, the gifts of grace and peace, eternal life itself, are evermore proceeding. The Father will so show them that the Son will see and do them, and so bring them by revelation to your consciousness that ye may marvel.
Christ will not say here that ye may believe, but that ye may look on confounded and astonished. This was the first effect of Christ's work—Christ's revelation of the Father's heart, Christ's demonstration of the Father's nearness and character.
Westcott quotes the apocryphal saying of our Lord preserved by Clement of Alexandria, 'Str.,' John 2:9. 45, "He that wonders shall reign, and he that reigns shall rest." The wonders of grace will never be exhausted.
New combinations, new transformations, new discoveries, new insight into the eternal love, will be effected by him whom God hath sent, whom the Father hath sanctified and sent into the world (but see verse 28).