Mark 9:41

"For whoever gives you a cup of water to drink, on the ground that you belong to Christ, I solemnly say to you, he will not fail to get his reward.

Matthew 10:42

And I solemnly say to you, no one who gives a cup of cold water to one of the least of my disciples, because he is a disciple, will ever fail to get his reward."

Matthew 25:40

And the King will answer them, 'I solemnly say to you, every time you did a good deed to one of these most insignificant brothers of mine, you did a good deed to me.'

John 19:25-27

Near Jesus' cross were standing His mother and her sister Mary, the wife of Clopas, and Mary of Magdala.

Romans 8:9

But you are not living on the plane of the lower nature, but on the spiritual plane, if the Spirit of God has His home within you. Unless a man has the Spirit of Christ, he does not belong to Him.

Romans 14:15

For if your brother is hurt because of the food you eat, you are not living by the standard of love. Stop ruining, by what you eat, the man for whom Christ died.

1 Corinthians 3:23

Yes, you belong to Christ, and Christ belongs to God.

1 Corinthians 15:23

But each in his proper order; Christ first, then at His coming those who belong to Christ.

2 Corinthians 10:7

You look at me and measure me by outward appearances. If anyone is confident in himself that he belongs to Christ, let him have another thought about himself, that just as he belongs to Christ, so do I.

Galatians 3:29

And if you belong to Christ, then you are real descendants of Abraham, and heirs in accordance with the promise made to him.

Galatians 5:24

And those who belong to Jesus the Christ have crucified the lower nature with its passions and evil cravings.

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 I solemnly say to you, no one who gives a cup of cold water to one of the least of my disciples, because he is a disciple, will ever fail to get his reward."
Matthew 25:40
And the King will answer them, 'I solemnly say to you, every time you did a good deed to one of these most insignificant brothers of mine, you did a good deed to me.'

Because

John 19:25
Near Jesus' cross were standing His mother and her sister Mary, the wife of Clopas, and Mary of Magdala.
Romans 8:9
But you are not living on the plane of the lower nature, but on the spiritual plane, if the Spirit of God has His home within you. Unless a man has the Spirit of Christ, he does not belong to Him.
Romans 14:15
For if your brother is hurt because of the food you eat, you are not living by the standard of love. Stop ruining, by what you eat, the man for whom Christ died.
1 Corinthians 3:23
Yes, you belong to Christ, and Christ belongs to God.
1 Corinthians 15:23
But each in his proper order; Christ first, then at His coming those who belong to Christ.
2 Corinthians 10:7
You look at me and measure me by outward appearances. If anyone is confident in himself that he belongs to Christ, let him have another thought about himself, that just as he belongs to Christ, so do I.
Galatians 3:29
And if you belong to Christ, then you are real descendants of Abraham, and heirs in accordance with the promise made to him.
Galatians 5:24
And those who belong to Jesus the Christ have crucified the lower nature with its passions and evil cravings.