And they brought young children to him, that he should touch them: and his disciples rebuked those that brought them.
All Commentaries on Mark 10:13 Go To Mark 10
Augustine of Hippo
AD 430
When any people, you see, who are already of an age to make free decisions of will, approach the sacraments of the faithful, they cannot begin the new life unless they repent of the old. It’s only babies that are exempt from this kind of repentance when they are baptized; after all they are not yet capable of making free choices. However, the faith of those who present them for baptism can avail them for sanctification and the remission of original sin; thus whatever defilement of wrongdoing they may have contracted through others, of whom they have been born, they can be purged of it through the interrogation of these others and the replies they give.