The most plausible explanation for the origin of infant baptism is found in the emergency baptism of sick children expected to die soon so that they would be assured of entrance into the kingdom of heaven.Baptism in the Early Church : History, Theology , and Liturgy in the First Five Centuries (Eerdmans, 2009), 856
There is general agreement that there is no firm evidence for infant baptism before the latter part of the second century.Baptism in the Early Church : History, Theology , and Liturgy in the First Five Centuries (Eerdmans, 2009)