were concerned about biblical errors and Catholic remnants within the prayer book. Puritans objected to bowing at the name of Jesus, the requirement that priests wear the surplice, and the use of written, set prayers in place of improvised prayers. The sermon was central to Puritan piety. It was not only a means of religious education; Puritans believed it was the most common way that God prepared a sinner's heart for conversion. On Sundays, Puritan ministers often shortened the liturgy to allow more time for preaching. Puritan churchgoers attended two sermons on Sundays and as many weekday sermons and lectures they could find, often traveling for miles. Puritans were distinct for their adherence to Sabbatarianism. Puritans taught that there were two sacraments: baptism and the Lord's Supper. Puritans agreed with the church's practice of infant baptism. However, the effect of baptism was disputed. Puritans objected to the prayer book's assertion of baptismal regeneration. In Puritan theology, infant baptism was understood in terms of covenant theology—baptism replaced circumcision as a sign of the covenant and marked a child's admission into the visible church. It could not be assumed that baptism produces regeneration. The Westminster Confession states that the grace of baptism is only effective for those who are among the elect, and its effects lie dormant until one experiences conversion later in life. Puritans wanted to do away with godparents, who made baptismal vows on behalf of infants, and give that responsibility to the child's father. Puritans also objected to priests making the sign of the cross in baptism. Private baptisms were opposed because Puritans believed that preaching should always accompany sacraments. Some Puritan clergy even refused to baptise dying infants because that implied the sacrament contributed to salvation. Puritans rejected both Roman Catholic (transubstantiation) and Lutheran (sacramental union) teachings that Christ is physically present in the bread and wine of the Lord's Supper. Instead, Puritans embraced the Reformed doctrine of real spiritual presence, believing that in the Lord's Supper the faithful receive Christ spiritually. In agreement with Thomas Cranmer, the Puritans stressed "that Christ comes down to us in the sacrament by His Word and Spirit, offering Himself as our spiritual food and drink". They criticised the prayer book service for being too similar to the Catholic mass. For example, the requirement that people kneel to receive communion implied adoration of the Eucharist, a practice linked to transubstantiation. Puritans also