One of these little ones. — The term was familiarly used of the scholars of a Rabbi, and in this sense our Lord, as the great Master, sending forth His disciples, now employs it. He would not disregard even the cup of cold water given to the humblest disciple as such and for the sake of Christ. Taken by themselves, the words do not go beyond this but the language of Matthew 25:40 justifies their extension to every act of kindness done to any man in the name of that humanity which He shares with those whom He is not ashamed to call His brethren (Hebrews 2:11).
Related Commentaries of Matthew 10:42
Matthew 10:42
42 And whosoever shall give to drink unto one of these little ones a cup of cold water only in the name of a disciple, verily I say unto you, he shall in no wise lose his reward.