If you believe that Jesus:
- Came to Earth as The Word made flesh (i.e. God)
- Created the world by speaking it into reality
- Walked on water
- Healed the blind, deaf, mute, lame, leprous
- Controlled the weather
- Changed water into wine
- Fed thousands with a few loaves and a few fish
- Was transfigured before His disciples very eyes
- Raised the dead (including Himself)
- Rose from the dead in a glorified, spiritual, physical body (1Cor 15:44-49, John 6:61-63)
- Ascended into Heaven
If you believe all of that, then why not believe that Jesus actually changed bread into His body and wine into His blood? (Matt 26:26-28) He spoke it into reality. He’s God, after all.
“He that eats my flesh and drinks my blood, dwells in me, and I in him. As the living Father has sent me, and I live by the Father: so he that eats me, even he shall live by me.” (John 6:56-57)
There should be no reason to disbelieve any of His words in John 6, unless you are regarding them “in the flesh.”
“The flesh” will profit you nothing. (John 6:63, Rom 8)
“His flesh” profits you everything. He gave it for the life of the world (John 6:51)
The words of Jesus are “spirit” and “life,” not “symbol” or “metaphor.” (John 6:63) “Spirit” is very real and very life-giving.
Believe it.