D&C 74
It is interesting to hear a correction of scripture whereby we are told that Paul made up a commandment to help the church which did not originate with the Lord. His reasoning was sound though – he was trying to put an end to a pernicious doctrine which Mormon had also fought against – that children were subject to the demands of justice. With the Jews it was circumcision, but the idea in their mind was the same as the idea behind the false doctrine of infant baptism.