Part I. On the Most Holy Sacrament Considered in Itself

135.

The Most Holy Eucharist is usually defined: The sacrament of the Body and Blood of the Lord for the spiritual refreshment of the soul.

This definition having been handed down, we shall speak first, briefly, about the existence, then about the essence, then about the effects, finally about the necessity of the Eucharist.

The Holy Eucharist

Within this part

Section I. On the Existence of the Sacrament of the Eucharistnn. 136–138
Section II. On the Essence of the Sacrament of the Eucharistnn. 139–150
- Chapter I. On the Remote Matternn. 140–147
  - Article I. On the Matter of Breadnn. 141–142
  - Article II. On the Matter of Winenn. 143–147
    Scholion. On a Defect of Valid or Certainly Valid Matter Detected in Massnn. 145–147
- Chapter II. On the Formnn. 148–150
Section III. On the Effects of the Sacrament of the Eucharistnn. 151–154
Section IV. On the Necessity of the Sacrament of the Eucharistnn. 155–159
- Chapter I. On Necessity of Meansn. 155
- Chapter II. On Necessity of Divine Preceptnn. 156–159