"Most assuredly, I say to you, he who believes in Me, the WORKS that I do he will do also; and GREATER WORKS than these he will do, because I go to My Father."
Jesus in this passage was referring to the many miracles that He had performed while on earth.
The following verses confirm that it was MIRACLES that our Lord Jesus did:
But I have a greater witness than John's; for the WORKS which the Father has given Me to finish--the very WORKS that I do--bear witness of Me, that the Father has sent Me.
Believe Me that I am in the Father and the Father in Me, or else believe Me for the sake of the WORKS themselves.
If I had not done among them the WORKS which no one else did, they would have no sin; but now they have seen and also hated both Me and My Father.
3 how shall we escape if we neglect so great a salvation, which at the first began to be spoken by the Lord, and was confirmed to us by those who heard Him,
4 God also bearing witness both with SIGNS and WONDERS, with various MIRACLES, and GIFTS of the Holy Spirit, according to His own will?
I remember when I first faced the Truth of Jesus own words; "...Most assuredly, I say to you, he who believes in Me, the WORKS that I do he will do also..."
I had not (yet) done any of the WORKS that Jesus did, and neither had anyone at the church I was attending.
So I began taking Jesus words very seriously, and I discovered that many of the teachings of "the church" (churches I attended over the early years) were NOT the teachings of Jesus Christ, but actually contradicted what He taught.
As I began holding to God's Word, God began doing miracles through me, and I came to understand what Jesus meant concerning the approval of man or the approval of God. I seek the approval of God above all, and I do want to please Him, my Papa. He's my Hero, and I know no one like Him.
When one of us REALLY begins to LISTEN to HIS word, He makes all things new, and the old things pass away.