Jerome
Catena Aurea · Matthäusevangelium 18
At the same time came the disciples unto Jesus, saying, Who is the greatest in the kingdom of heaven? And Jesus called a little child unto him, and set him in the midst of them, And said, Verily I say unto you, Except ye be converted, and become as little children, ye shall not enter into the kingdom of heaven. Whosoever therefore shall humble himself as this little child, the same is greatest in the kingdom of heaven. And whoso shall receive one such little child in my name receiveth me. But whoso shall offend one of these little ones which believe in me, it were better for him that a millstone were hanged about his neck, and that he were drowned in the depth of the sea.
Observe that he who is offended is a little one, for the greater hearts do not take offences. And though it may be a general declaration against all who scandalize any, yet from the connection of thediscourse it may be said specially to the Apostles; for in asking who should be greatest in the kingdom of heaven, they seemed to be contending for preeminence among themselves; and if they had persisted in this fault, they might have scandalized those whom they called to the faith, seeing the Apostles contending among themselves for the preference.