Treating a subject frequently discussed without a full understanding of its biblical background, Marcel treats baptism within the broad context of the theology of justification and grace without ever losing sight of the biblical evidence. It is only when he has shown, after a careful study of both Old and New Testaments, the position of a child within the covenant of grace that he turns his attention to the specific subject of baptism. The author's vindication of the doctrine of infant baptism does not rely upon archaeological or patristic evidence about the practice of the early Church - convincing as that evidence may be - but on the evidence of Scripture.

The authoritative treatment of the doctrine of baptism within the broad context of the theology of justification and grace. Marcel's vindication of the doctrine of infant baptism is considered the more impressive as it relies upon the evidence of Scripture rather that the archeological of patristic evidence of the Early Church.