The distinction between the necessity of precept and the necessity of means, is obvious and important. No one would be willing to say, without qualification, that it is unnecessary to obey an explicit command of Christ. And as He has commanded his disciples to baptize all who are received as members of his Church, in the name of the Father, of the Son, and of the Holy Ghost, and required his disciples statedly to commemorate his death by the celebration of the Lord’s Supper, the strongest moral obligation rests upon his people to obey these commands. But the obligation to obey any command, such as to observe the Sabbath, to visit the sick, and to relieve the poor, depends on circumstances. No opportunity may be offered; or the discharge of the duty may be hindered by external circumstances; or we may lack the ability to render the service required. So with regard to the command to be baptized and to commemorate the Lord’s death at his table, it is evident that many circumstances may occur to prevent obedience even on the part of those who have the disposition and purpose to do whatever their Lord requires at their hands. And even where obedience is not prevented by external circumstances, it may be prevented by ignorance, or by unfounded scruples of conscience.
By the necessity of means is usually understood an absolute necessity, a “sine qua non.” In this sense food is a necessity of life; light is necessary to the exercise of vision; the Word is necessary to the exercise of faith, for it is its object, the thing which is to be believed; and faith is, on the part of adults, necessary to salvation, for it is the act of receiving the grace of God offered in the Bible. And therefore times almost without number, it is said in Scripture, that we are saved by faith, that he that believeth shall be saved, and that he that believeth not shall not see life.
The question between the Reformed on the one hand, and Lutherans and Romanists on the other, is in which of these senses are the sacraments necessary. According to the Reformed they have the necessity of precept. The use of them is enjoined as a duty; but they are not necessary means of salvation. Men may be saved without them. The benefits which they signify and which they are the means of signifying, sealing, and applying to believers, are not so tied to their use that those benefits cannot be secured without them. Sins may be forgiven, and the soul regenerated and saved, though neither sacrament has ever been received. The Lutherans and Romanists, on the other hand, hold that the sacraments are necessary means of grace, in the sense that the grace which they signify is not received otherwise than in their use. There is no remission of sin or regeneration without baptism; no reception of the body and blood of Christ to our spiritual nourishment and growth in grace, without the Lord’s Supper; and, according to Romanists, no forgiveness of post-baptismal sins without priestly absolution; no grace of orders without canonical ordination; and no special preparation for death without extreme unction. This question is of importance chiefly in reference to baptism, and will therefore come up when that sacrament is under consideration. At present it is only the general teachings of these several churches that need be referred to. The “Consensus Tigurinus” is the most carefully considered and cautiously worded exposition of the doctrine of the Reformed in relation to the sacraments, belonging to the period of the Reformation. It was drawn up to settle the differences on this subject between the churches of Geneva and those of Zurich. It contains the statements in reference to the sacraments to which both parties agreed. It teaches1 (1.) That the sacraments are “notæ ac tesseræ” of Christian fellowship and brotherhood; incitements to gratitude, faith, and a holy life, and “syngraphæ” binding us thereto. They were ordained especially that therein God might testify, represent, and seal to us his grace. (2.) The things signified are not to be separated from the signs. Those who by faith receive the latter receive also the former. (3.) That respect is to be had rather to the promise to which our faith is directed; for the elements without Christ “nihil sint quam inanes larvæ.” (4.) The sacraments confer nothing “propria eorum virtute;” God alone works in us by his Spirit. They are organs or means by which God efficaciously operates. (5.) They are sometimes called seals, but the Spirit alone is properly the seal as well as the beginner and finisher of our faith. (6.) God does not operate in all who receive the sacraments, but only in his own chosen people. (7.) Hence the doctrine is to be rejected that the sacraments convey grace to all who do not oppose the obstacle of mortal sin. The grace of God is not so bound to the signs, that all who have the latter have the former. (8.) Believers receive without the sacraments the blessings which they receive in their use. “Extra eorum usum fidelibus constat, quæ illic figuratur veritas.” Paul received baptism for the remission of sins; but his sins were remitted before he was baptized. Baptism was to Cornelius the layer of regeneration, but he had received the Spirit before he was thus externally washed. In the Lord’s Supper we receive Christ, but Christ dwells in every believer, and we must have faith before we can acceptably approach the table of the Lord. (9.) The benefit of the sacraments is not confined to the time in which they are administered or received. God often regenerates long after baptism those baptized in infancy; some in early youth, some in old age. The benefit of baptism, therefore, continues through the whole life, because the promise signified therein continues always in force.