The Christian parents enter into a covenantal relationship with God when they believe in Jesus Christ. This covenant requires that parents nurture and bring the children up in the fear and knowledge of God. They are to pray with and for them, study the Bible together, and grow in the Lord together. Throughout the Bible, the family, not the individual, is the basic social unit. Children are born into a social environment which involves a covenant standing and covenant obligations.
Parents exercise faith and take vows for their children in a representative capacity.
Therefore just as the infants of the people of Israel were circumcised as a sign of the covenant that they belong to the visible body of God's people in the Old Testament, the children of believers are baptized as a sign that they belong to the visible church. We baptize infants NOT that they might join the church but because they are already part of the visible church. They will not be baptised again. The only mode of baptism practised in Calvary BPC is sprinkling. We do not say that this is the only right and acceptable mode of baptism.