Mark 9:38-42

³⁸John said to Him, “Teacher, we saw someone casting out demons in Your name, and we tried to prevent him because he was not following us.” ³⁹But Jesus said, “Do not hinder him, for there is no one who will perform a miracle in My name, and be able soon afterward to speak evil of Me. ⁴⁰For the one who is not against us is for us. ⁴¹For whoever gives you a cup of water to drink because of your name as followers of Christ, truly I say to you, he shall by no means lose his reward.

⁴²“Whoever causes one of these little ones who believe in Me to sin, it is better for him if a heavy millstone is hung around his neck and he is thrown into the sea.