“Jesus answered, “I am the way and the truth and the life. No one comes to the Father except through me.”
John and Peter, of all the disciples had a special relationship with Jesus. Jesus even allowed them time to commune with Elijah and Moses. John writes in a particular style that is also evident in his letters and in Revelations. Earlier, John had written that Jesus was the Word made flesh. That flesh was sacrificed by God, as a gift to those whom God loved, so that God could abide them Because eternal life is close proximity to God. And to perish is to be utterly riven from God.
Here, Jesus is answering a question to a disciple. The disciple has not understood how Jesus could have, through God, many rooms that he would prepare for them. The explicit answer was that Jesus would be crucified, but come back from the dead, leaving the Holy Spirit for his disciples, and all believers?