Mark 9:41

For whoever gives you even a cup of water to drink because you belong to Christ, in solemn truth I tell you, that he shall certainly not lose his reward.

Matthew 10:42

"And whoever gives to drink to one of these little ones a cup of cold water only, because he is a disciple, I tell you in solemn truth, he shall not lose his reward.

Matthew 25:40

"'In solemn truth I tell you,' the King will answer them, 'that inasmuch as you have done it unto one of the least of these, my brothers, you have done it unto me.'

John 19:25-27

Now there stood near the cross of Jesus, his mother and his mother's sister, Mary the wife of Clopas, and Mary Magdalene.

Romans 8:9

But you are not earthly, but spiritual, if indeed the Spirit of God is really dwelling in you. If any one does not have the Spirit of Christ, he is none of his.

Romans 14:15

If your brother is continually pained because of your food, you are not conducting yourself any longer in love. Do not, by what you eat, persist in destroying a man for whom Christ died.

1 Corinthians 3:23

and you are Christ's, and Christ is God's.

1 Corinthians 15:23

But each in his own order; Christ the first-fruits, then those who belong to Christ at his appearing.

2 Corinthians 10:7

Look these facts in the face. If any man is fully persuaded as regards himself that he belongs to Christ, let him consider again with himself, that just as he is Christ's, so also am I.

Galatians 3:29

And if you belong to Christ, then you are the descendants of Abraham, heirs according to the promise.

Galatians 5:24

And those who belong to Christ have crucified the flesh with its passions and appetites.

Treasury of Scripture Knowledge

Summary

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.

Bible References

Whosoever

Matthew 10:42
"And whoever gives to drink to one of these little ones a cup of cold water only, because he is a disciple, I tell you in solemn truth, he shall not lose his reward.
Matthew 25:40
"'In solemn truth I tell you,' the King will answer them, 'that inasmuch as you have done it unto one of the least of these, my brothers, you have done it unto me.'

Because

John 19:25
Now there stood near the cross of Jesus, his mother and his mother's sister, Mary the wife of Clopas, and Mary Magdalene.
Romans 8:9
But you are not earthly, but spiritual, if indeed the Spirit of God is really dwelling in you. If any one does not have the Spirit of Christ, he is none of his.
Romans 14:15
If your brother is continually pained because of your food, you are not conducting yourself any longer in love. Do not, by what you eat, persist in destroying a man for whom Christ died.
1 Corinthians 3:23
and you are Christ's, and Christ is God's.
1 Corinthians 15:23
But each in his own order; Christ the first-fruits, then those who belong to Christ at his appearing.
2 Corinthians 10:7
Look these facts in the face. If any man is fully persuaded as regards himself that he belongs to Christ, let him consider again with himself, that just as he is Christ's, so also am I.
Galatians 3:29
And if you belong to Christ, then you are the descendants of Abraham, heirs according to the promise.
Galatians 5:24
And those who belong to Christ have crucified the flesh with its passions and appetites.