Westminster Confession of Faith
Chapter 29: Of the Lord’s Supper
3: The Lord Jesus has, in this ordinance, appointed His ministers to declare His word of institution to the people, to pray, and bless the elements of bread and wine, and thereby to set them apart from a common to an holy use; and to take and break the bread, to take the cup, and (they communicating also themselves) to give both to the communicants; but to none who are not then present in the congregation.
Westminster Larger Catechism
Q. 169. How hath Christ appointed bread and wine to be given and received in the sacrament of the Lord’s supper?
A. Christ hath 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.