35). Therefore, the children of believers are to receive the sign of initiation, which is now baptism (Acts 2:38–39).
The Mode of Baptism
Protestants agree that ordinary water is to be used in the sacrament, but they disagree on how it is to be used. The Baptist view of baptism asserts that immersion is the only valid mode of baptism, based partly on the meaning of the Greek word baptizō, which, it is said, means “to dip” or “to immerse.” Baptizō, however, cannot and does not always mean “to immerse” (see, e.g., Mark 7:4 [“washing” = baptizō]; Acts 2:41; Rom. 6:3). In the Baptist view, immersion—going down into and coming up out of the water—is said to best picture the death and resurrection of Christ, but this misses the fact that in ancient Israel the dead were buried horizontally, in caves and such, rather than vertically as in the soft ground of North America.
The Reformed view, over against the Baptist view, sees immersion as nonessential and instead sees affusion—sprinkling or pouring—as a better picture of what baptism signifies (Heb. 10:22; WCF 28.3). Various passages speak of the Holy Spirit as “coming upon,” “falling upon,” or being “poured out” on believers (see, e.g., Acts 1:8; 2:3, 17; 11:15–16). When the Holy Spirit falls on someone in this way, it means He is regenerating him and working faith in him. This is baptism of the Holy Spirit—salvation (Matt. 3:11; Acts 2:33; Eph. 1:13–14; WLC 165). Therefore, it makes sense for the baptism of water to imitate the baptism of the Holy Spirit.
To summarize, the Reformed view understands baptism to be a sacrament that was instituted by Christ and is properly administered to those who are in the visible church, along with their children.