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30They went forth from there, and passed through Galilee. He didn`t want anyone to know it. 31For he taught his disciples, and said to them, "The Son of Man is delivered up into the hands of men, and they will kill him; and when he is killed, on the third day he will rise again." 32But they didn`t understand the saying, and were afraid to ask him.
33He came to Capernaum, and when he was in the house he asked them, "What were you arguing among yourselves on the way?" 34But they were silent, for they had disputed one with another on the way about who was the greatest. 35He sat down, and called the twelve; and he said to them, "If any man wants to be first, he will be last of all, and servant of all." 36He took a little child, and set him in the midst of them. Taking him in his arms, he said to them, 37"Whoever receives one such little child in my name, receives me, and whoever receives me, doesn`t receive me, but him who sent me." 38John said to him, "Teacher, we saw someone who doesn`t follow us casting out demons in your name; and we forbade him, because he doesn`t follow us." 39But Jesus said, "Don`t forbid him, for there is no one who will do a mighty work in my name, and be able quickly to speak evil of me. 40For whoever is not against us is on our side.
Mark 9:30-40 (WEB)