The first preparation, then, which the faithful should make, is to distinguish table from table, this sacred table from profane tables, this celestial bread from common bread. This we do when we firmly believe that there is truly present the body and blood of the Lord, of Him whom the Angels adore in heaven, at whose nod the pillars of heaven fear and tremble, of whose glory the heavens and the earth are full. This is to discern the body of the Lord in accordance with the admonition of the Apostle. We should venerate the greatness of the mystery rather than too curiously investigate its truth by idle inquiry.
Preparation Of Soul
Another very necessary preparation is to ask ourselves if we are at peace with and sincerely love our neighbor. If, therefore, thou offerest thy gift at the altar, and there rememberest that thy brother hath anything against thee, leave there thy offering before the altar, and go first to be reconciled to thy brother, and then coming thou shalt offer thy gift.
We should, in the next place, carefully examine whether our consciences be defiled by mortal sin, which has to be repented of, in order that it may be blotted out before Communion by the remedy of contrition and confession. The Council of Trent has defined that no one conscious of mortal sin and having an opportunity of going to confession, however contrite he may deem himself, is to approach the Holy Eucharist until he has been purified by sacramental confession.
We should also reflect in the silence of our own hearts how unworthy we are that the Lord should bestow on us this divine gift, and with the centurion of whom our Lord declared that he found not so great faith in Israel, we should exclaim from our hearts: Lord, I am not worthy that thou shouldst enter under my roof.
We should also put the question to ourselves whether we can truly say with Peter: Lord, thou knowest that I love thee, and should recollect that he who sat down at the banquet of the Lord without a wedding garment was cast into a dark dungeon and condemned to eternal torments.
Our preparation should not, however, be confined to the soul; it should also extend to the body. We are to approach the Holy Table fasting, having neither eaten nor drunk anything at least from the preceding midnight until the moment of Communion.
Preparation Of Body
The dignity of so great a Sacrament also demands that married persons abstain from the marriage debt for some days previous to Communion. This observance is recommended by the example of David, who, when about to receive the showbread from the hands of the priest, declared that he and his servants had been clean from women for three days.
The above are the principal things to be done by the faithful preparatory to receiving the sacred mysteries with profit; and to these heads may be reduced whatever other things may seem desirable by way of preparation.