I am the bread of life John 6:48. Yes and Jesus also said: My food is to do the will of God who sent me and to finish his work John 4:34.
So it has to do with behaviour, deeds, the way we live in love and spirit and true worship.
John 6:63 is also mentioned. Indeed, the Spirit gives life... and Jesus words give Spirit and Life. Jesus says in Matt 15:17-18 that everything one eats goes to the stomach and ends up in the sewer. (When we partake it is symbolique)
In John 4 where Jesus and the Samaritan woman are talking to eachother she asks him: WHERE should we worship God? In Gerizim or Jerusalem? And Jesus says: NOT on Mount Gerizim NOR in Jerusalem.
Just meditate and think about the words he was saying there!
And then he says in John 4:23 Yet a time is coming and has now come, when the true worshippers will worship the Father is spirit and truth, for the Father is looking for such people to worship Him. 24 God is Spirit (communicates through Spirit), and those who worship Him must worship in spirit and truth.
Worship in spirit and truth. Jesus said I am the way, the truth and the life. No one comes to the Father, except through me.
He is our Mediator in every sence. So spiritually as well. Col 2:2 I want you to be encouraged and kept together by strong love. And that you will have the rich experience of knowing Christ. For God's secret, which He has finally made known, is Christ himself. 3 All the treasures of wisdom and Knowledge are hidden in him.