John Gill
For whosoever shall give you a cup of water to drink,.... Not only one that does a miracle in the name of Christ, but he that shows the least respect, or does the least kindness to any one of his; [See comments on Matthew 10:42]; is to be reckoned a friend, and is so accounted by Christ; and will be sooner or later taken notice of by him, especially, if what he does, be it ever so little, is done...
Matthew Henry
In this chapter, we have, I. Christ's transfiguration upon the mount, ver. 1-13. II. His casting the devil out of a child, when the disciples could not do it, ver. 14-29. III. His prediction of his own sufferings and death, ver. 30-32. IV. The check he gave to his disciples for disputing who should be greatest (ver. 33-37); and to John for rebuking one who cast out devils in Christ's name, and...
Charles H. Spurgeon
For he that is not against us is on our part. For whosoever shall give you a cup of water to drink in my name, because ye belong to Christ, verily I say unto you, he shall not lose his reward.