Annotatio IV §.II: John 6 = antecedent most lucid commentary on the Institution words
So read, John 6 specially exposes what the sacramental Mode of presence and participation is — the antecedent, most lucid commentary on the Institution words.
Not on a Supper already instituted then, but on the one soon to be: torch and light for ‘This is my Body’ / ‘This is my blood,’ clearing the disciples’ scruples.
Latin
Ceterum hôc posteriori modo cap. Joh. 6. de S. Cœna deque Sacramentali & carnis & sanguinis Christi tùm præsentia, tùm participatione, ita specialtim agitur, ut quis hic modus sacramentalis utriusque, & qualis censendus sit, omnium disertissimè inibi exponatur, quô proinde nomine sermonem Christi, Joh. 6. cap. habitum, antecedaneum verborum Institutionis Christi eumque luculentissimum Commentarium arbitramur esse, i. e. Commentarium non de jam tum instituta, sed de paulò post instituenda S. Cœna, tantam huic facem præferentem, tantumque luminis, concisis Institutionis Christi verbis: Hoc est Corpus meum, & Hic enim sanguis meus, fæneratum, ut Discipulis Christi, per Magistri sui sermonem istum, objectionibus & dubiis suis omnibus plenissimè liberatis, nullum amplius scrupulum ista vel moverint, vel quiverint movere.