Adam Clarke on John 6:55

My flesh is meat indeed, and my blood is drink indeed - Or, rather, My flesh is the true meat, etc. In both clauses of this verse, instead of αληθως, the adverb, I read αληθης, the adjective, agreeing with βρωσις. This reading is supported by BCKLT, and twenty-one others; both the Arabic, Coptic, Sahidic, Armenian, two copies of the Itala, Clement, Origen, Cyril, Chrysostom, and Damascenus. Our Lord terms his flesh, the true meat, and his blood the true drink, because those who received the grace merited by his death would be really nourished and supported thereby unto eternal life. He calls himself the true vine, Joh 15:1, in exactly the same sense in which he calls himself the true bread, Joh 6:32, and the true meat and drink in this verse.