The Christian literary sources, backed by secular word usage and Jewish religious immersions, give an overwhelming support for full immersion as the normal action.Baptism in the Early Church : History, Theology , and Liturgy in the First Five Centuries (Eerdmans, 2009), 857
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)