And whoever gives one of these little ones only a cup of cold water in the name of a disciple, assuredly, I say to you, he shall by no means lose his reward."
Matthew 10:42
Surrounding context
10:41 He who receives a prophet in the name of a prophet shall receive a prophet's reward. And he who receives a righteous man in the name of a righteous man shall receive a righteous man's reward.
10:42 And whoever gives one of these little ones only a cup of cold water in the name of a disciple, assuredly, I say to you, he shall by no means lose his reward."