Jesus is saying:
“Verily verily, I say unto you, he that believes on ME, the works that I do shall he do also, and greater works than these he do; because I go unto My Father,” in John 14:12.
“And He said, whereunto shall we liken the kingdom of God? or with what comparison shall we compare it? It is like a grain of mustard seed, which, when it is sown in the earth, is less than all the seeds that be in the earth: but when it is sown, it groweth up, and becometh greater than all herbs, and shooteth out great branches; so that the fowls of the air may lodge under the shadow of it,” in Mark 4:30-32.
“And the Lord said, If ye had faith as a grain of mustard seed, ye might say unto this sycmore tree, be thou plucked up by the root, and be thou planted in the sea; and it should obey you,” in Luke 17:6.
“Unto you it is given to know the mystery of the kingdom of God,” in Mark 4:11.
“And when He was demanded of the Pharisees, when the kingdom of God should come, He answered them and said, The kingdom of God cometh not with observation: Neither shall they say, Lo here! or, lo there! for, behold, the kingdom of God is within you,” in Luke 17:20-21.
“Behold, I give unto you power to tread on serpents and scorpions, and over all the power of the enemy: and nothing shall by any means hurt you.” in Luke 10:19.
“To him that overcometh will I grant to sit with Me in My throne, even as I also overcame, and am set down with My Father in His throne,” in Revelation 3:21.