Mark 9:39-41

Young's Literal Translation

³⁹ And Jesus said, `Forbid him not, for there is no one who shall do a mighty work in my name, and shall be able readily to speak evil of me:

⁴⁰ for he who is not against us is for us;

⁴¹ for whoever may give you to drink a cup of water in my name, because ye are Christ's, verily I say to you, he may not lose his reward;