Jesus is one with the Father in this sense. It would be great if we were too. This comes from having a spirit of revelation from God. It makes the one filled this way so much like the Father. Just as Jesus is so much like the Father. I get much of my gospel message from the gospel of John. I find my life has been blessed with fulfilment of promises I find in John’s gospel. So it rings true for me, and I boldly confess that to all. But note that most of the entire second half of his gospel John dedicated to the narrative of Jesus preparing his disciples for his crucifixion and resurrection, and then a full account of how that crucifixion and resurrection came about. This is the divine means by which the spirit of revelation can be given you by God, if you believe Jesus died for you, as the gospel says. It had to be by blood, not just by spirit.