I am the vine, you are the branches. Those who abide in me and I in them bear much fruit, because apart from me you can do nothing. (NRSVCE John 15:5,8)
It is this disciple who testifies to these things and has written them, and we know that his testimony is true. There are also many other things that Jesus did, but if these were to be described individually... John 21:24–25