Mark 9:39-41

New Revised Standard Version, Anglicised Catholic Edition

³⁹ But Jesus said, ‘Do not stop him; for no one who does a deed of power in my name will be able soon afterwards to speak evil of me. ⁴⁰ Whoever is not against us is for us. ⁴¹ For truly I tell you, whoever gives you a cup of water to drink because you bear the name of Christ will by no means lose the reward.