On bread from heaven.

A reproduction of the reform study bible's commentary on John6:32

 

6:32 the true bread from heaven. The word “true” has a special meaning. Jesus refers to what is everlasting, as opposed to something merely representative. The bread God provided through Moses (Ex. 16; Num. 11) was only material and temporary, not spiritual and eternal. See note at 4:24.

 

 A reproduction of the reform study bible's commentary on revelation2:17

 

 

2:17 hidden manna. Perhaps an allusion to the manna preserved in the Most Holy Place of the tabernacle (Ex. 16:33–35; Heb. 9:4). Christ promises to nourish the faithful with an unfailing supply of heavenly, spiritual food (John 6:32–58).

 

In other words the physical relief  brought about by the miracles That Jehovah empowered is apostles(including Christ and his apostles) to perform in bible times was only temporary and relatively incomplete,and an allusion to something permanent and complete.

 Isaiah33:24NKJV"And the inhabitant will not say,"I am sick";The people who dwell in it will be forgiven their iniquity"