Luke 9:48

For he who receives the followers of Christ, receives Christ; and he who receives the image of God, receives God; but because we cannot see the image of God, it has been made present to us by the incarnation of the Word, that the divine nature which is above us, may be reconciled to us.

Hence it follows, And he says unto them, Whosoever shall receive a child in my name, receiveth me. As if He were to say, Seeing that there is one and the same reward to those that honour the saints, whether perchance such an one be the least, or one distinguished for honours and glory, for in him is Christ received, how vain is it to seek to have the preeminence? Now He still more plainly conveys the meaning of the preceding words, saying, For he that is least among you all, the same shall be great; in which He speaks of the modest man who from honesty thinks nothing high of himself.

Now herein He either teaches, that the poor of Christ are to be received by those who wish to be greater simply for His honour, or He persuades men that they are children in malice. Hence when He said, Whoever shall receive that child, he adds, in my name; that in truth they may pursue with diligence and reason for Christ's name that form of virtue which the child observes, with only nature for its guide. But because He also teaches that He is received in the child, and He Himself was born unto us a child; lest it should be thought that this was all which was seen, He subjoined, And whoever shall receive me, receiveth him that sent me; wishing verily to be believed, that as was the Father, such and so great was He.