When all necessary conditions are present what must the two to be married do in order to receive the sacrament, and who is the minister of the sacrament?
The two parties must give themselves each to the other, actually, by free consent, without constraint or being forced thereto by grave fear; the consent must be formal and mutual, manifested by words or signs about which there can be no mistake; and the two contracting parties are themselves the ministers of the sacrament of Matrimony (Code, Canons 5085-5087; XLVII. 1-6).
Next - The Catechism of the Summa - Tertia Pars - XLIII. OF THE SACRAMENT OF MATRIMONY; OF ITS NATURE, IMPEDIMENTS, DUTIES; OF DIVORCE; OF SUBSEQUENT MARRIAGE; AND OF ESPOUSALS (G)