Let's look at the Westminister Catechism on the Lord's Supper,
Q. What is the Lord's Supper? A. The Lord's Supper is an ordinance of the New Testament, instituted by Jesus Christ; wherein, by giving and receiving bread and wine, according to his appointment, his death is shown forth (1 Cor. 11:23-26), and the worthy receivers are, not after a corporeal and carnal manner, but by faith, made partakers of his body and blood, with all his benefits, to their spiritual nourishment, and growth in grace (1 Cor. 10:16).
Q. What is required to the worthy receiving of the Lord's Supper? A. It is required of them who would worthily partake of the Lord's Supper, that they examine themselves of their knowledge to discern the Lord's body (1 Cor. 11:28-29), of their faith to feed upon him (2 Cor. 13:5), of their repentance (1 Cor. 11:31), love (1 Cor. 11:18-20), and new obedience, (1 Cor. 5:8) lest coming unworthily, they eat and drink judgment to themselves (1 Cor. 11:27-29).
Q. What is meant by the words, "until he come," which are used by the apostle Paul in reference to the Lord's Supper? A. They plainly teach us that our Lord Jesus Christ will come a second time; which is the joy and hope of all believers (Acts 1:11 1 Thess. 4:16).
Question 168: What is the Lord's Supper?We ought to understand that it is the Father's will for us to partake of the Eucharist through the divine and holy remembrance of His only-beloved Son by the guidance of the Holy Spirit. The Eucharist is different then other meals of a Christian because it is set apart; that is, it is essentially holy. We agree with St. Augustine that the Son is localized at the right hand of the Father; that is, He is at the right hand of Power. We ought to understand that the Eucharist is celebrated with unleavened bread to show forth the purity of the sacrament. We ought to understand that Jesus said "This is my body." Some do not understand the plain context of the verse, but they take an over literal meaning of the verse. I would suggest to you that the "is" means a representation of the body of Christ. It depends on how one understands the "is." I suggest to you that the human nature of Christ cannot be everywhere like the divine nature. Once one says that the human nature is taken everywhere it becomes the divine nature. Its in violatiion of the Definition Chalechon. We cannot mix the natures of Christ but we ought to make a distinction. I would say that the Roman Eucharist is a Monophysite Jesus; that is, they mix the natures of Christ to make it merely a divine nature. We say that the divine nature is everywhere but the human nature is at the right hand of the Father. We believe this a consistent and logical understanding of the Eucharist.
Answer: The Lord's Supper is a sacrament of the New Testament, wherein, by giving and receiving bread and wine according to the appointment of Jesus Christ, his death is showed forth; and they that worthily communicate feed upon his body and blood, to their spiritual nourishment and growth in grace; have their union and communion with him confirmed; testify and renew their thankfulness, and engagement to God, and their mutual love and fellowship each with other, as members of the same mystical body.
Question 169: How has Christ appointed bread and wine to be given and received in the sacrament of the Lord's Supper?
Answer: Christ has appointed the ministers of his Word, in the administration of this sacrament of the Lord's Supper, to set apart the bread and wine from common use, by the word of institution, thanksgiving, and prayer; to take and break the bread, and to give both the bread and the wine to the communicants: who are, by the same appointment, to take and eat the bread, and to drink the wine, in thankful remembrance that the body of Christ was broken and given, and his blood shed, for them.
Question 170: How do they that worthily communicate in the Lord's Supper feed upon the body and blood of Christ therein?
Answer: As the body and blood of Christ are not corporally or carnally present in, with, or under the bread and wine in the Lord's Supper, and yet are spiritually present to the faith of the receiver, no less truly and really than the elements themselves are to their outward senses; so they that worthily communicate in the sacrament of the Lord's Supper, do therein feed upon the body and blood of Christ, not after a corporal and carnal, but in a spiritual manner; yet truly and really, while by faith they receive and apply unto themselves Christ crucified, and all the benefits of his death.
Question 171: How are they that receive the sacrament of the Lord's Supper to prepare themselves before they come unto it?
Answer: They that receive the sacrament of the Lord's Supper are, before they come, to prepare themselves thereunto, by examining themselves of their being in Christ, of their sins and wants; of the truth and measure of their knowledge, faith, repentance; love to God and the brethren, charity to all men, forgiving those that have done them wrong; of their desires after Christ, and of their new obedience; and by renewing the exercise of these graces, by serious meditation, and fervent prayer.
Question 172: May one who doubts of his being in Christ, or of his due preparation, come to the Lord's Supper?
Answer: One who doubts of his being in Christ, or of his due preparation to the sacrament of the Lord's Supper, may have true interest in Christ, though he be not yet assured thereof; and in God's account has it, if he be duly affected with the apprehension of the want of it, and unfeignedly desires to be found in Christ, and to depart from iniquity: in which case (because promises are made, and this sacrament is appointed, for the relief even of weak and doubting Christians) he is to bewail his unbelief, and labor to have his doubts resolved; and, so doing, he may and ought to come to the Lord's Supper, that he may be further strengthened.
Question 173: May any who profess the faith, and desire to come to the Lord's Supper, be kept from it?
Answer: Such as are found to be ignorant or scandalous, notwithstanding their profession of the faith, and desire to come to the Lord's Supper, may and ought to be kept from that sacrament, by the power which Christ has left in his church, until they receive instruction, and manifest their reformation.
Question 174: What is required of them that receive the sacrament of the Lord's Supper in the time of the administration of it?
Answer: It is required of them that receive the sacrament of the Lord's Supper, that, during the time of the administration of it, with all holy reverence and attention they wait upon God in that ordinance, diligently observe the sacramental elements and actions, heedfully discern the Lord's body, and affectionately meditate on his death and sufferings, and thereby stir up themselves to a vigorous exercise of their graces; in judging themselves, and sorrowing for sin; in earnest hungering and thirsting after Christ, feeding on him by faith, receiving of his fulness, trusting in his merits, rejoicing in his love, giving thanks for his grace; in renewing of their covenant with God, and love to all the saints.
Question 175: What is the duty of Christians, after they have received the sacrament of the Lord's Supper?
Answer: The duty of Christians, after they have received the sacrament of the Lord's Supper, is seriously to consider: How they have behaved themselves therein, and with: What success; if they find quickening and comfort, to bless God for it, beg the continuance of it, watch against relapses, fulfil their vows, and encourage themselves to a frequent attendance on that ordinance: but if they find no present benefit, more exactly to review their preparation to, and carriage at, the sacrament; in both which, if they can approve themselves to God and their own consciences, they are to wait for the fruit of it in due time: but, if they see they have failed in either, they are to be humbled, and to attend upon it afterwards with more care and diligence.
Question 176: Wherein do the sacraments of Baptism and the Lord's Supper agree?
Answer: The sacraments of Baptism and the Lord's Supper agree, in that the author of both is God; the spiritual part of both is Christ and his benefits; both are seals of the same covenant, are to be dispensed by ministers of the gospel, and by none other; and to be continued in the church of Christ until his second coming.
Question 177: Wherein do the sacraments of Baptism and the Lord's Supper differ?
Answer: The sacraments of Baptism and the Lord's Supper differ, in that Baptism is to be administered but once, with water, to be a sign and seal of our regeneration and ingrafting into Christ, and that even to infants; whereas the Lord's Supper is to be administered often, in the elements of bread and wine, to represent and exhibit Christ as spiritual nourishment to the soul, and to confirm our continuance and growth in him, and that only to such as are of years and ability to examine themselves.
Therefore, following the holy fathers, we all with one accord teach men to acknowledge one and the same Son, our Lord Jesus Christ, at once complete in Godhead and complete in manhood, truly God and truly man, consisting also of a reasonable soul and body; of one substance with the Father as regards his Godhead, and at the same time of one substance with us as regards his manhood; like us in all respects, apart from sin; as regards his Godhead, begotten of the Father before the ages, but yet as regards his manhood begotten, for us men and for our salvation, of Mary the Virgin, the God-bearer; one and the same Christ, Son, Lord, Only-begotten, recognized in two natures, without confusion, without change, without division, without separation; the distinction of natures being in no way annulled by the union, but rather the characteristics of each nature being preserved and coming together to form one person and subsistence, not as parted or separated into two persons, but one and the same Son and Only-begotten God the Word, Lord Jesus Christ; even as the prophets from earliest times spoke of him, and our Lord Jesus Christ himself taught us, and the creed of the fathers has handed down to us.Let's look at the London Confession of Faith,
Chapter 30: Of the Lord's Supper
1._____ The supper of the Lord Jesus was instituted by him the same night wherein he was betrayed, to be observed in his churches, unto the end of the world, for the perpetual remembrance, and shewing forth the sacrifice of himself in his death, confirmation of the faith of believers in all the benefits thereof, their spiritual nourishment, and growth in him, their further engagement in, and to all duties which they owe to him; and to be a bond and pledge of their communion with him, and with each other.
( 1 Corinthians 11:23-26; 1 Corinthians 10:16, 17,21 ) 2._____ In this ordinance Christ is not offered up to his Father, nor any real sacrifice made at all for remission of sin of the quick or dead, but only a memorial of that one offering up of himself by himself upon the cross, once for all; and a spiritual oblation of all possible praise unto God for the same. So that the popish sacrifice of the mass, as they call it, is most abominable, injurious to Christ's own sacrifice the alone propitiation for all the sins of the elect.
( Hebrews 9:25, 26, 28; 1 Corinthians 11:24; Matthew 26:26, 27 )
3._____ The Lord Jesus hath, in this ordinance, appointed his ministers to pray, and bless the elements of bread and wine, and thereby to set them apart from a common to a holy use, and to take and break the bread; to take the cup, and, they communicating also themselves, to give both to the communicants.
( 1 Corinthians 11:23-26, etc. )
4._____ The denial of the cup to the people, worshipping the elements, the lifting them up, or carrying them about for adoration, and reserving them for any pretended religious use, are all contrary to the nature of this ordinance, and to the institution of Christ.
( Matthew 26:26-28; Matthew 15:9; Exodus 20:4, 5 )
5._____ The outward elements in this ordinance, duly set apart to the use ordained by Christ, have such relation to him crucified, as that truly, although in terms used figuratively, they are sometimes called by the names of the things they represent, to wit, the body and blood of Christ, albeit, in substance and nature, they still remain truly and only bread and wine, as they were before.
( 1 Corinthians 11:27; 1 Corinthians 11:26-28 )
6._____ That doctrine which maintains a change of the substance of bread and wine, into the substance of Christ's body and blood, commonly called transubstantiation, by consecration of a priest, or by any other way, is repugnant not to Scripture alone, but even to common sense and reason, overthroweth the nature of the ordinance, and hath been, and is, the cause of manifold superstitions, yea, of gross idolatries.
( Acts 3:21; Luke 14:6, 39; 1 Corinthians 11:24, 25 )
7._____ Worthy receivers, outwardly partaking of the visible elements in this ordinance, do then also inwardly by faith, really and indeed, yet not carnally and corporally, but spiritually receive, and feed upon Christ crucified, and all the benefits of his death; the body and blood of Christ being then not corporally or carnally, but spiritually present to the faith of believers in that ordinance, as the elements themselves are to their outward senses.
( 1 Corinthians 10:16; 1 Corinthians 11:23-26 )
