Chapter 27: Of the Sacraments

Sacraments are holy signs and seals of the covenant of grace, immediately instituted by God, to represent Christ and His benefits; and to confirm our interest in Him; as also, to put a visible difference between those that belong unto the Church, and the rest of the world; and solemnly to engage them to the service of God in Christ, according to His Word.
Rom. 4:11; Gen. 17:7, 10; Matt. 28:19; 1 Cor. 11:23; 1 Cor. 10:16; 1 Cor. 11:25-26; Gal. 3:17; Rom. 15:8; Ex. 12:48; Gen. 34:14; Rom. 6:3-4; 1 Cor. 10:16, 21.
There is in every sacrament a spiritual relation, or sacramental union, between the sign and the thing signified; whence it comes to pass, that the names and effects of the one are attributed to the other.
Gen. 17:10; Matt. 26:27-28; Titus 3:5.
The grace which is exhibited in or by the sacraments rightly used, is not conferred by any power in them: neither doth the efficacy of a sacrament depend upon the piety or intention of him that administers it: but upon the work of the Spirit, and the word of institution, which contains, together with a precept authorising the use thereof, a promise of benefit to worthy receivers.
Rom. 2:28-29; 1 Pet. 3:21; Matt. 3:11; 1 Cor. 12:13; Matt. 26:27-28; Matt. 28:19-20.
There are only two sacraments ordained by Christ our Lord in the Gospel; that is to say, Baptism and the Supper of the Lord: neither of which may be dispensed by any but by a minister of the Word lawfully ordained.
Matt. 28:19; 1 Cor. 11:20, 23; 1 Cor. 4:1; Heb. 5:4.
The sacraments of the Old Testament, in regard of the spiritual things thereby signified and exhibited, were, for substance, the same with those of the New.
1 Cor. 10:1-4.