Calvin versus Child Communion

In John 6:41-53, during His sermon to the murmuring and strife-filled Jews who were acquainted with His earthly parents, Jesus made a very significant statement.   He said: ‘Truly, I tell you – unless you eat the flesh of the Son of man and drink His blood, you have no life within yourselves!’  

Many Paedocommunionists sacramentalistically think that this passage demands their own position.   Post-Nicene and indeed Post-Chrysostomian Eastern-Orthodox Paedocommunionists, as well as their modern maverick Western Quasi-Neocalvinist imitators, cite especially this passage to support their views.