Origen
Catena Aurea · Johannesevangelium 13
Little children, yet a little while I am with you. Ye shall seek me: and as I said unto the Jews, Whither I go, ye cannot come; so now I say to you. A new commandment I give unto you, That ye love one another; as I have loved you, that ye also love one another. By this shall all men know that ye are my disciples, if ye have love one to another.
(t. xxxii. 19.) Little children, He says; for their souls were yet in infancy. But these little children, after His death, were made brethren; as before they were little children, they were servants.