Jesus’ disciple John said to him “Teacher, we stopped someone from driving out demons in your name because he isn’t one of us.” Jesus said “Don’t stop him, because if anyone is doing miracles in my name he’ll soon support my message. Whoever is not against us is for us. Whoever gives you a cup of water in my name because you belong to the Christ, I assure you he will be rewarded.
Anyone who welcomes you, welcomes me. Anyone who welcomes me welcomes the One who sent me. Anyone who welcomes the prophet because he speaks for God will receive the same award the prophet receives. Whoever welcomes a righteous person because of his righteousness will receive the reward of the righteous. Furthermore, whoever gives even a cup of cold water to a little child in the name of the disciple is blessed.”
LK 9:49-50, MK 9:38-41, MT 10:40-42