Article 33: The Sacraments.
We believe that our gracious God, on account of our weakness and infirmities, hath ordained the sacraments for us, thereby to seal unto us His promises, and to be pledges of the good will and grace of God toward us, and also to nourish and strengthen our faith, which He hath joined to the Word of the gospel, the better to present to our senses both that which He signifies to us by His Word and that which He works inwardly in our hearts, thereby assuring and confirming in us the salvation which He imparts to us. For they are visible signs and seals of an inward and invisible thing, by means whereof God worketh in us by the power of the Holy Ghost. Therefore the signs are not in vain or insignificant, so as to deceive us. For Jesus Christ is the true object presented by them, without whom they would be of no moment. 
Moreover, we are satisfied with the number of sacraments which Christ our Lord hath instituted, which are two only, namely, the sacrament of baptism and the holy supper of our Lord Jesus Christ.