Matthew 10:41-42

41Somebody may accept a prophet into his home because the visitor is a prophet of God. God will bless that person like he blesses a prophet. Or he may accept a good man who obeys God, because the man is good. God will bless that person like he blesses the good man.

42People may think that my disciples are unimportant. But God will bless anyone who gives even a drink of cold water to one of them. I tell you, that person will never lose God's help.’