Many Protestants today see the baptizing of infants as an invention of the Roman Catholic Church. But during the Reformation of the 16th century, when the Protestant Reformers threw off many unbiblical practices of the Roman Church, they continued to baptize infants. Were they duped? Did they lack thoroughness in their reform? Or did they see Biblical merit in including the children of believers in the covenant family of God? This booklet proves the abiding validity of administering the sacrament of baptism to covenant children.