Q. 177. Wherein do the sacraments of baptism and the Lord’s supper differ?

A.
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,[1142] and that even to infants;[1143] 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,[1144] and to confirm our continuance and growth in him,[1145] and that only to such as are of years and ability to examine themselves.[1146]

[1142] Matthew 3:11. I indeed baptize you with water unto repentance: but he that cometh after me is mightier than I, whose shoes I am not worthy to bear: he shall baptize you with the Holy Ghost, and with fire. Titus 3:5. Not by works of righteousness which we have done, but according to his mercy he saved us, by the washing of regeneration, and renewing of the Holy Ghost. Galatians 3:27. For as many of you as have been baptized into Christ have put on Christ.
[1143] Genesis 17:7, 9. And I will establish my covenant between me and thee and thy seed after thee in their generations for an everlasting covenant, to be a God unto thee, and to thy seed after thee.... And God said unto Abraham, Thou shalt keep my covenant therefore, thou, and thy seed after thee in their generations. Acts 2:38-39. Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost. For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call. 1 Corinthians 7:14. For the unbelieving husband is sanctified by the wife, and the unbelieving wife is sanctified by the husband: else were your children unclean; but now are they holy.
[1144] 1 Corinthians 11:23-26. For I have received of the Lord that which also I delivered unto you, That the Lord Jesus the same night in which he was betrayed took bread: And when he had given thanks, he brake it, and said, Take, eat: this is my body, which is broken for you: this do in remembrance of me. After the same manner also he took the cup, when he had supped, saying, This cup is the new testament in my blood: this do ye, as oft as ye drink it, in remembrance of me. For as often as ye eat this bread, and drink this cup, ye do show the Lord's death till he come.
[1145] 1 Corinthians 10:16. The cup of blessing which we bless, is it not the communion of the blood of Christ? The bread which we break, is it not the communion of the body of Christ?