30 And going forth from thence they went through Galilee; and he would not that any one knew it; 31 for he taught his disciples and said to them, The Son of man is delivered into men's hands, and they shall kill him; and having been killed, after three days he shall rise again. 32 But they understood not the saying, and feared to ask him.
33 And he came to Capernaum, and being in the house, he asked them, Of what were ye reasoning by the way? 34 And they remained silent, for by the way they had been reasoning with one another who [was] greatest. 35 And sitting down he called the twelve; and he says to them, If any one would be first, he shall be last of all, and minister of all. 36 And taking a little child he set it in their midst, and having taken it in his arms he said to them, 37 Whosoever shall receive one of such little children in my name, receives me; and whosoever shall receive me, does not receive me, but him who sent me.
38 And John answered him saying, Teacher, we saw some one casting out demons in thy name, who does not follow us, and we forbad him, because he does not follow us. 39 But Jesus said, Forbid him not; for there is no one who shall do a miracle in my name, and be able soon [after] to speak ill of me; 40 for he who is not against us is for us.
Matthew Henry's Commentary on Mark 9:30-40
Commentary on Mark 9:30-40
(Read Mark 9:30-40)
The time of Christ's suffering drew nigh. Had he been delivered into the hands of devils, and they had done this, it had not been so strange; but that men should thus shamefully treat the Son of man, who came to redeem and save them, is wonderful. Still observe that when Christ spake of his death, he always spake of his resurrection, which took the reproach of it from himself, and should have taken the grief of it from his disciples. Many remain ignorant because they are ashamed to inquire. Alas! that while the Saviour teaches so plainly the things which belong to his love and grace, men are so blinded that they understand not his sayings. We shall be called to account about our discourses, and to account for our disputes, especially about being greater than others. Those who are most humble and self-denying, most resemble Christ, and shall be most tenderly owned by him. This Jesus taught them by a sign; whoever shall receive one like this child, receives me. Many have been like the disciples, ready to silence men who have success in preaching to sinners repentance in Christ's name, because they follow not with them. Our Lord blamed the apostles, reminding them that he who wrought miracles in his name would not be likely to hurt his cause. If sinners are brought to repent, to believe in the Saviour, and to live sober, righteous, and godly lives, we then see that the Lord works by the preacher.